These are homework exercises to accompany the Textmap created for "General Chemistry: Principles and Modern Applications " by Petrucci et al.
Complementary General Chemistry question banks can be found for other Textmaps and can be accessed here. In addition to these publicly available questions, access to private problems bank for use in exams and homework is available to faculty only on an individual basis; please contact Delmar Larsen for an account with access permission.
At room temperature, a solution is made by adding 50mL of 0. Calculate the following at equilibrium:. For a solution that is 0. A solution of volume There are various procedures for preparing buffer solutions. Identify one indicator each that would change color in an acidic solution, a basic solution, and a neutral solution.
What color will a solution with bromphenol blue change to with the following species in solution. Assume no ionization or disassociation occurs in the 1-pentanol layer. For the solution that is 0. A solution of volume 1L contains 0. If chlorphenol red turns orange? Without making detailed calculations, state what color the indicator will assume in each of the following solutions.
Two aqueous solutions are mixed. What is the pH of the resulting solution? Explain why the volume of 0. Sketch a titration curve for each of the following three weak acids when titrated with 0. Using appropriate equilibrium constants but without doing detailed calculations, determine whether a solution can be simultaneously.
Complete the derivation of equation A salt is an ionic compound formed by the reaction between an acid and a base. Salts are strong electrolytes that dissociate completely in water. This dissolution of salts in water often affects the pH of a solution. Salts that produce Neutral solutions. At the beginning of the semester, we talked about acid-base neutralization reactions. We determined that if equimolar amounts of strong acids and bases were mixed, the products were water and salts.
Starting with Neutralization of 1. This reaction would produce 1. Their concentrations would be: 1. Removal of the water, evaporation, would lead to the formation of NaNO 3 sa salt. The Strong bases have conjugate acids of negligible acidity. The strong base, NaOH, dissociates completely in water. The reverse reaction does not occur.
It has no basic activity. Any combination of these anions and cations will produce neutral solutions. Salts that produce Basic solutions.
Weak acids can be neutralized by strong bases to form water and salts. For example, As we have just learned, HF, a weak acid, does not dissociate completely in water. How can a strong base neutralize the HF completely, when only a small portion of the acid exists in the ionized form? LeChatelier's Principle.
It will react with the OH - from the strong base to form water. When this happens, we have removed one of the products of the equilibrium system.Already have an account?
Log In. We don't have the exact solution yet. What scientific concept do you need to know in order to solve this problem? Our tutors have indicated that to solve this problem you will need to apply the Reaction Mechanism concept.
If you need more Reaction Mechanism practice, you can also practice Reaction Mechanism practice problems. If you forgot your password, you can reset it. Join thousands of students and gain free access to 46 hours of Chemistry videos that follow the topics your textbook covers. Analytical Chemistry Video Lessons. Cell Biology Video Lessons. Genetics Video Lessons. Biochemistry Video Lessons.
Calculus Video Lessons. Statistics Video Lessons. Microeconomics Video Lessons. Macroeconomics Video Lessons. Accounting Video Lessons. See all problems in Reaction Mechanism. Frequently Asked Questions What scientific concept do you need to know in order to solve this problem?
What textbook is this problem found in? Log in with Facebook. Log in with Gmail. Don't have an account? Sign up!Now, the base dissociation constant of the hypochlorite anions is calculated using the equation. So if you start with "0. If x "M" of hypochlorite anions ionize, then you get x "M" of hypochlorous acid and x "M" of hydroxide anions.
If x "M" of hypochlorite anions ionize, then you are left with 0. Now, you didn't provide a value for the base dissociation constant, but I can tell you that it's small enough to allow you to use the approximation. Since we've said that x "M" represents the equilibrium concentration of hydroxide anions, you will have.
Now all you have to do is to use the value of the base dissociation constant given to you--or you can simply do a quick search for the base dissociation constant of the hypochlorite anion--and plug it into the equation to find the "pH" of the solution.
The answer should be rounded to two decimal places because you have two sig figs for the concentration of the solution. What is the "pH" of a "0. Chemistry Acids and Bases pH. Stefan V. Apr 3, Related questions How do you determine pH from pKa?T-Pain - 5 O'Clock ft. Wiz Khalifa, Lily Allen (Official Music Video)
How do pH values of acids and bases differ? How do you calculate something on a pH scale? How do you calculate pH diprotic acid? How do you calculate pH from acid dissociation constant? How do you calculate pH of acid and base solution? Why is the pH scale ? Is pH a measure of the hydrogen ion concentration?
No document with DOI "10.1.1.1090.6008"
How does solubility affect pH?When acids are added to aqueous salts of hypochlorous acid such as sodium hypochlorite in commercial bleach solutionthe resultant reaction is driven to the left, and chlorine gas is formed.
Thus, the formation of stable hypochlorite bleaches is facilitated by dissolving chlorine gas into basic water solutions, such as sodium hydroxide. The acid can also be prepared by dissolving dichlorine monoxide in water; under standard aqueous conditions, anhydrous hypochlorous acid is currently impossible to prepare due to the readily reversible equilibrium between it and its anhydride: .
The presence of light or transition metal oxides of coppernickelor cobalt accelerates the exothermic decomposition into hydrochloric acid and oxygen : . Salts of hypochlorous acid are called hypochlorites. One of the best-known hypochlorites is NaClOthe active ingredient in bleach. HOCl reacts with ammonia to form monochloramine :. HOCl can also react with organic aminesforming N -chloroamines.
Hypochlorous acid reacts with a wide variety of biomolecules, including DNARNA    fatty acid groups, cholesterol         and proteins. Knox et al. This is because HClO oxidises sulfhydryl groups, leading to the formation of disulfide bonds  that can result in crosslinking of proteins. The HClO mechanism of sulfhydryl oxidation is similar to that of monochloramineand may only be bacteriostatic, because once the residual chlorine is dissipated, some sulfhydryl function can be restored.
Sulfenic acids form disulfides with another protein sulfhydryl group, causing cross-linking and aggregation of proteins. Sulfinic acid and R—SO 3 H derivatives are produced only at high molar excesses of HClO, and disulfides are formed primarily at bacteriocidal levels.
Hypochlorous acid reacts readily with amino acids that have amino group side-chains, with the chlorine from HClO displacing a hydrogen, resulting in an organic chloramine. Consistent with these results, it was later proposed that the chloramine undergoes a molecular rearrangement, releasing HCl and ammonia to form an aldehyde.
The sugar moieties are nonreactive and the DNA backbone is not broken. A second slower reaction that results in cleavage of the pyridine ring occurs when excess HClO is present. This reaction occurs by hydrolysis with addition of chlorine to one of the carbons and a hydroxyl to the other.
The resulting compound is a chlorohydrin. Disruption could occur if enough chlorohydrin is formed. InKnox et al. He proposed that the active agent or agents diffuse across the cytoplasmic membrane to inactivate key sulfhydryl -containing enzymes in the glycolytic pathway.
This group was also the first to note that chlorine solutions HOCl inhibit sulfhydryl enzymes. Later studies have shown that, at bacteriocidal levels, the cytosol components do not react with HOCl. It has been further shown that loss of sulfhydryls does not correlate with inactivation. The uptake of radiolabeled substrates by both ATP hydrolysis and proton co-transport may be blocked by exposure to HOCl preceding loss of viability.I played some small stakes spins on the jackpot slots (no life-changing win just yet.
I had a nice winning streak on blackjack but a little less luck on roulette, but ended up just about breaking even on my playing time. The casino section has a range of regular promotions, which can vary from deposit bonuses to competitions and cashback. I checked back a few times since signing up and these changed pretty often, so be sure to know what you are claiming beforehand to avoid disappointment.
I don't know so much about poker, but I figured it was worth trying out as I like card games in general. I downloaded the Bet365 poker software onto my laptop, at no charge, and tried out a few rounds on various different tables. Eventually I got bored and decided to watch some TV instead. Sometimes I get the urge to place a bet when I am out and about, for example waiting for the bus or getting a haircut.
However, being a forgetful person, I then miss out on the best odds, or completely forget to place the bet, which is pretty disappointing.
So when I saw there was a Bet365 sports app on the App Store, I thought to myself why not. It gave me access to my new account, so I could make bets, manage payments and more from the palm of my hand.
In fact I later learned that the Bet365 bonus code can also be entered on the app when signing up, so I could have done this if I had wished. That's a useful tip for anyone else who is reading this blog on mobile and may wish to sign up today. Also, there are loads of different apps available, depending on your preferred kind of betting and gaming service. So if you're exclusively a bingo lover, you can download the bingo app. Likewise for poker, games, live casino, Vegas and more.
From my experience, the Bet365 apps don't take up too much space. In fact, I was able to download several and have them on my phone at the same time. In the end I deleted the others and just kept the sports betting app, as that was my favourite.
Never again will I have to worry about getting bored when on the go.
Just like the Bet365 bonus code scheme and betting markets, I found the live sports streaming pretty cool too. I don't have any subscription to cable or satellite TV, as it seems like a waste of money when I can watch sports in a bar or at a friend's house instead. But what I didn't realise is that betting sites also offer live streaming of some sports events, with a few terms and conditions attached. That's the case at Bet365 and they actually have a better range of events to view on streaming when compared with other competitor sites.
On the day I looked up the streaming service I was able to watch a full World Cup qualifying match from South America, without having to listen to the usual nonsense spouted by commentators on TV.
If you wish to watch live sports on Bet365 too, you just need to log in via the website or mobile app and hit the live streaming option on the main menu, at which point a variety of football, tennis and horse racing action can be viewed, among other sporting events. Don't forget you need to have funds in your sports account in order to view a live stream.
If your account is empty, you unfortunately won't be able to watch a match, UNLESS you placed a bet in the last 24 hours before the event, in which case you should be able to. Also, bear in mind that the services are sometimes not available depending on the country you are in.
I was able to sign up and bet fine, but I know that some of my readers are less accustomed to betting, so might be confused with the process.
You shouldn't worry, it's really simple. I went on the live chat to ask about the streaming service and a customer services assistant was available right away to answer my query. I complimented him on the excellent streaming service and how easy it was to sign up with the Bet365 bonus code. You can also call up Bet365 if you prefer speaking to someone rather than typing on a computer or mobile. I reckon the quickest way to resolve your query is either live chat or by phone, but if you can afford to wait a little longer, email should also be OK.
Don't forget to check out the help and FAQ section first, you might save yourself some timeThis Bet365 sportsbook has strong appeal on various levels. Here is what I like about it, as well as some areas that could make the site even better:Your email address will not be published. Don't play with the law: check that the sites you register on are licensed in your country of residence.New England Patriots at Miami Dolphins (-11) Monday, Dec. News Local News N.
Nick Chubb (27) and his top-ranked Georgia Bulldogs visit the No. Three top 10 matchups are on the slate along with four other top 25 matchups as Week 11 of the 2017 season promises to shake up the College Football Playoff rankings next week. Top-ranked Georgia visits No.
Those other top 25 matchups also are intriguing: No. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Oregon Live LLC.
College football Week 11 predictions Three top 10 matchups are on the slate along with four other top 25 matchups as Week 11 of the 2017 season promises to shake up the College Football Playoff rankings next week. The Argentine side were never truly in difficulty in this tournament, and against the side that won the title against them in the previous edition they will want to prove that was just a mistake. We are betting on Vargas and Sanchez to explode the Colombian defense and see their side through to the final.
However, the team that tripped up Brazil in their Copa America opener (0-0) can count on their defensive qualities to hold their own in the contest. Yet it might take more than this combination to get past a Columbian side well seasoned to international competitions. If their recent results and form on the pitch are anything to go by, it stands to reason that their quarter final should see them dispose with ease of a valiant but technically limited Venezualan side. Their last two wins (3-0 and 5-0) showed the offensive potential of the team and reassured on its ability to keep a clean sheet.
Based on their recent record, Mexico advance into this quarter final with more confidence than their opponents. Yet it is hard to imagine a team like like Chile not pulling itself together 3 games from a continental final. The title holders have the squad to make it to the end, its just a matter of when they realize their potential on the field. Do you want to see the action unfold live. For more information, please refer to our Legal Mentions page.
Find the betting preview, predictions and tips for all of the 2016 Copa America fixtures below: Betting on the Final: CurrentFinal: Argentina vs. The Eagles head into their Week 13 game against the Seahawks as the biggest road favorite to play in Seattle since the Baltimore Ravens were 6. Despite the near-touchdown spread, this week has seen the most people picking against the Eagles since they went into Carolina in Week 6 as a three-point underdog, a game they won by five points.
By comparison, the Birds were also six-point favorites the last time they played on the road (Week 11 at Dallas), and almost nobody outside of Cowboys fans was picking against them. With a win, the Birds will win 10 straight in a single season for the first time in franchise history. The question is, will they. You can check that out, here. This is not the same Seahawks team you remember over the last five years. The Seahawks can no longer bulldoze defenses with Marshawn Lynch, and they're missing both Richard Sherman and Kam Chancellor on the back end defensively.
I think this is the next in line of teams that gets exposed by a superior Eagles roster.
Full disclosure: I do not enjoy watching the Eagles try to handle Russell Wilson. Without Richard Sherman, I think the Seahawks are vulnerable enough for the Eagles to take down.