For a particular application in my lab, we often need to make a benzoic acid buffer....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
For a particular application in my lab, we often need to make a benzoic acid buffer. The chemical formula for benzoic acid is HC₂H₂CO₂. To make this buffer, let's say we start with 1.53 M sodium benzoate in 1 L of water (and assume 11 of volume throughout this problem). 1. (4 pts) Using the chemical formula information above, show the chemical reaction of benzoate with water to form products. Make sure you include the phases of matter. 2. (4 pts) What is the value of the equilibrium constant for this reaction? 3. (8 pts) What is the pH of the solution right now? 4. (9 pts) Let's say we add HCl, show the reaction that would occur. 5. (15 pts) Let's say we add 0.62 mol HCL. What is the resulting pH now? 6. (5 pts) Ok, to the solution in #5 above, after we add the HCI, we now add 0.23 mol NaOH. Identify the component in the solution with which the NaOH will react. 7. (10 pts) What is the new pH of the solution described in #6? 8. (5 pts) At which stage in here (Identify a number 1, 4, or 6) does this solution become a buffer and briefly describe why. For a particular application in my lab, we often need to make a benzoic acid buffer. The chemical formula for benzoic acid is HC₂H₂CO₂. To make this buffer, let's say we start with 1.53 M sodium benzoate in 1 L of water (and assume 11 of volume throughout this problem). 1. (4 pts) Using the chemical formula information above, show the chemical reaction of benzoate with water to form products. Make sure you include the phases of matter. 2. (4 pts) What is the value of the equilibrium constant for this reaction? 3. (8 pts) What is the pH of the solution right now? 4. (9 pts) Let's say we add HCl, show the reaction that would occur. 5. (15 pts) Let's say we add 0.62 mol HCL. What is the resulting pH now? 6. (5 pts) Ok, to the solution in #5 above, after we add the HCI, we now add 0.23 mol NaOH. Identify the component in the solution with which the NaOH will react. 7. (10 pts) What is the new pH of the solution described in #6? 8. (5 pts) At which stage in here (Identify a number 1, 4, or 6) does this solution become a buffer and briefly describe why.
Expert Answer:
Related Book For
Posted Date:
Students also viewed these chemistry questions
-
In problem 8.16, a college chemistry instructor thinks the use of embedded tutors will improve the success rate in introductory chemistry courses. The instructor carried out a hypothesis test and...
-
You have exams in economics and chemistry coming up, and you have 5 hours available for studying. The following table shows the trade-offs you face in allocating the time you will spend studying each...
-
A college chemistry instructor thinks the use of embedded tutors will improve the success rate in introductory chemistry courses. The passing rate for introductory chemistry is 62%. During one...
-
Assume that a security is selling at INR 217 and American call and American put options are available on the stock with 3 months maturity and an exercise price of INR 210. The call is selling at INR...
-
Under a Force Management Plan (FMP) adopted by Lucent in July 2001, employees who were downsized would receive severance pay and other benefits. Employees were told that the facility that they worked...
-
The volume of water in a sample of moist soil is 0.24 m3. The volume of solids Vs is 0.25 m3. Given that the density of soil solids s is 2600 kg/m3, find the water content.?
-
How do the structures of the alveoli and their surrounding capillaries facilitate gas exchange?
-
1. What factors help to explain why J&J historically had as many as 12 DCs in Europe? 2. What steps in the logistics/supply chain network design process discussed in this chapter would have been most...
-
How do corporate governance frameworks address the accountability and responsibility of organizations towards their stakeholders ?
-
Brian and Corrine Lee are married taxpayers filing jointly. They live in the home they own, located at 3301 Pacific Coast Hwy., Laguna Beach, CA 92651. Brian is an optometrist who owns his business;...
-
Will is moving from Boston to Philadelphia, which is 300 miles away. He is traveling at an average speed of 65 miles per hour. Will stops for gas after a couple of hours and wonders how much further...
-
You own a put option on Oracle stock with an exercise price of $20 that expires today. Plot the value of this option as a function of the stock price.
-
Dynamic Energy Systems stock is currently trading for $39 per share. The stock pays no dividends. A one-year European put option on Dynamic with a strike price of $43 currently trading for $4.37. If...
-
Your firm is considering two one-year loan options for a $531,000 loan. The first carries fees of 1.9% of the loan amount and charges interest of 4% of the loan amount. The other carries fees of 1%...
-
The NFF Corporation has announced plans to acquire LE Corporation. NFF is trading at $47 per share and LE is trading at $23 per share, implying a premerger value of LE of $9.6 billion. If the...
-
Your firm is selling 4 million shares in an IPO. You are targeting an offer price of $16.83 per share. Your underwriters have proposed a spread of 5.6%, but you would like to lower it to 3.6%....
-
Drag and drop the key components against the corresponding SWOT analysis. Strengths Strengths drop zone empty. Weaknesses Weaknesses drop zone empty. Opportunities Opportunities drop zone empty....
-
Maria Castigliani is head of the purchasing department of Ambrosiana Merceti, a medium-sized construction company. One morning she walked into the office and said, The main problem in this office is...
-
Assume an application program uses separate audio and video streams during an RTP session. How many SSRCs and CSRCs are used in each RTP packet?
-
In FTP, can a server retrieve a file from the client site?
-
In a TCP connection, the window size fluctuates between 60,000 bytes and 30,000 bytes. If the average RTT is 30 ms, what is the throughput of the connection?
-
A wind turbine works by slowing the air that passes its blades and converting much of the extracted kinetic energy to electric energy. A large wind turbine has 45-m-radius blades. In typical...
-
You are pulling a child in a wagon. The rope handle is inclined upward at a 60 angle. The tension in the handle is 20 N. How much work do you do if you pull the wagon 100 m at a constant speed?
-
A typical muscle fiber is 2.0 cm long and has a cross-section area of 3.1 10-9 m 2 . When the muscle fiber is stimulated, it pulls with a force of 1.2 mN. What is the work done by the muscle fiber...
Study smarter with the SolutionInn App