Homework Answers
Since we have this propanoic acid with pka value of around 5 we can say.
Although it is a weak acid but to some extent it will try to disaciate into its constituent ions i.e C3H7O2- and H+ which is a property of an acid.
And the anionic form of the acid is known as its conjugate base according to bronsted acid base theory.
Hnece Acid is. C3H7O2H
And its conjugate base is C3H7O2-
Which will try to eaten up all the H+ ions from the solution to reverse the reaction.
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What are the acid and conjugate base for this question?
1. Say I have a 200...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base and acid formed. HSO3-(aq) + CH3NH3(aq) ------ H2SO3(aq) + CH3NH2(aq) 2. Write the formulae for the conjugate acids of: 1. a) C2042: the oxalate ion. 2.b) C6H5NH2, aniline. 3.c)NH2OH, hydroxylamine. (Use above question as a guide for where to put the H.) 3. Calculate the molarity of OH' in solutions with the following concentrations of H30*: a) 0.020 mol LP b) 1.0 x 10-5...
All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+,...
All of the following are acid-base conjugate pairs EXCEPT Group of answer choices H2O, H3O+ NH4+, NH3 CH3COOH, CH3COO- H3O+, OH- HPO42-, PO43- The pH of a 1.86 M solution of a weak monoprotic acid, is 2.31. What is the Ka of the acid? Group of answer choices 4.7 x 10-5 4.1 x 10-7 3.4 x 105 2.4 x 10-4 1.3 x 10-5 You have 250.0 mL of a 0.56 M solution of NaCH3COO. How many milliliters of a 0.50...
a) From the list below, pick an acid, along with its conjugate base, that can be...
a) From the list below, pick an acid, along with its conjugate base, that can be used to make a pH 7.40 buffer. H3PO4 Ka = 6.9 x 10^-3 H2PO4- Ka = 6.4 x 10^-8 HPO42- Ka = 4.8 x 10^-13 b) If you have 0.100 M solutions of the acid and the conjugate base in the system that you picked and there was 20.0 mL of the base, how many mL of the acid would you need to make...
Review of acids/bases and acid-base neutralization: 1. What species is the conjugate acid of HCO? 2....
Review of acids/bases and acid-base neutralization: 1. What species is the conjugate acid of HCO? 2. Which species is the conjugate base of HPO 2-? Refresher of Acid/Base Equilibria, Ka, and pK., and buffer solutions: 1. The (H30') in a cabernet Sauvignon wine is 5.9 x 10 M. What is the (-OH) in this wine? 2. The pH of a lime is 1.90. What is the [H30*]? 3. What is the pH of a cleaning solution with a [H3O+] =...
QUESTION 17 You have a solution of an unknown acid and its conjugate base. The solution...
QUESTION 17 You have a solution of an unknown acid and its conjugate base. The solution has a pH of 3.15 and the acid has a Kz of 1.2 x 10-4. What is the base-to-acid concentration ratio?
Strong base is dissolved in 765 mL of 0.400 M weak acid (Ka = 4.23 ×...
Strong base is dissolved in 765 mL of 0.400 M weak acid (Ka =
4.23 × 10-5) to make a buffer with a pH of 4.19. Assume that the
volume remains constant when the base is added.
Strong base is dissolved in 765 mL of 0.400 M weak acid (Ka 4.23x 10) to make a buffer with a pH of 4.19. Assume that the volume remains constant when the base is added. HA(aq) + OH-(aq) → H2O()-A-(aq) Calculate the pKa...
I can't figure out how to find the concentration of the conjugate base. Question 2 If...
I
can't figure out how to find the concentration of the conjugate
base.
Question 2 If a 50.00 mL sample of 0.132 M ammonium chloride is titrated with 21.47 mL of 0.149 M NaOH, what is the pH of the titration mixture? (For NH4CI, Ka = 5.75 x 10-10, Selected Answer: 2 Correct Answer: 9.21 +0.02 Response This is in the buffered region of the titration. Therefore, calculate the moles of weak acid initially present and the Feedback: moles of...
If a buffer solution is 0.300 M in a weak base (K5 = 2.7 x 10 ) and 0.400 M in its conjugate acid, what is the pH?...
If a buffer solution is 0.300 M in a weak base (K5 = 2.7 x 10 ) and 0.400 M in its conjugate acid, what is the pH? pH = You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pK-4.20) and 0.200 M sodium benzoate How many milliliters of each solution should be mixed to prepare this buffer? benzoic acid: Amt ml. sodium benzoate: 1 ml
What is the conjugate acid of the Brønsted-Lowry base, (CH3)3N O of 1 point earned 3...
What is the conjugate acid of the Brønsted-Lowry base, (CH3)3N O of 1 point earned 3 attempts remaining What is the conjugate acid of the Brønsted-Lowry base, CsH5NH2? O of 1 point earned 3 attempts remaining What is the conjugate acid of the Brønsted-Lowry base, HCO3"? O of 1 point earned 3 attempts remaining What is the conjugate acid of the Brønsted-Lowry base, H2PO4" O of 1 point earned 3 attempts remaining What is the conjugate base of the Brønsted-Lowry...
Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid...
Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid H,CO, H.PO, XS ? H,0 он H,0 clo, Submit I Don't Know At a certain temperature, the equilibrium constant K for the following reaction is 8.0 x 10 NO3(8) + NO(g) – 2 NO,(8) Use this information to complete the following table. A There will be very little NO, and NO. Suppose a 29. L reaction vessel is filled with 2.0 mol of NO3...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base and acid formed. HSO3-(aq) + CH3NH3(aq) ------ H2SO3(aq) + CH3NH2(aq) 2. Write the formulae for the conjugate acids of: 1. a) C2042: the oxalate ion. 2.b) C6H5NH2, aniline. 3.c)NH2OH, hydroxylamine. (Use above question as a guide for where to put the H.) 3. Calculate the molarity of OH' in solutions with the following concentrations of H30*: a) 0.020 mol LP b) 1.0 x 10-5...
Review of acids/bases and acid-base neutralization: 1. What species is the conjugate acid of HCO? 2. Which species is the conjugate base of HPO 2-? Refresher of Acid/Base Equilibria, Ka, and pK., and buffer solutions: 1. The (H30') in a cabernet Sauvignon wine is 5.9 x 10 M. What is the (-OH) in this wine? 2. The pH of a lime is 1.90. What is the [H30*]? 3. What is the pH of a cleaning solution with a [H3O+] =...
QUESTION 17 You have a solution of an unknown acid and its conjugate base. The solution has a pH of 3.15 and the acid has a Kz of 1.2 x 10-4. What is the base-to-acid concentration ratio?
Strong base is dissolved in 765 mL of 0.400 M weak acid (Ka =
4.23 × 10-5) to make a buffer with a pH of 4.19. Assume that the
volume remains constant when the base is added.
Strong base is dissolved in 765 mL of 0.400 M weak acid (Ka 4.23x 10) to make a buffer with a pH of 4.19. Assume that the volume remains constant when the base is added. HA(aq) + OH-(aq) → H2O()-A-(aq) Calculate the pKa...
I
can't figure out how to find the concentration of the conjugate
base.
Question 2 If a 50.00 mL sample of 0.132 M ammonium chloride is titrated with 21.47 mL of 0.149 M NaOH, what is the pH of the titration mixture? (For NH4CI, Ka = 5.75 x 10-10, Selected Answer: 2 Correct Answer: 9.21 +0.02 Response This is in the buffered region of the titration. Therefore, calculate the moles of weak acid initially present and the Feedback: moles of...
If a buffer solution is 0.300 M in a weak base (K5 = 2.7 x 10 ) and 0.400 M in its conjugate acid, what is the pH? pH = You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pK-4.20) and 0.200 M sodium benzoate How many milliliters of each solution should be mixed to prepare this buffer? benzoic acid: Amt ml. sodium benzoate: 1 ml
What is the conjugate acid of the Brønsted-Lowry base, (CH3)3N O of 1 point earned 3 attempts remaining What is the conjugate acid of the Brønsted-Lowry base, CsH5NH2? O of 1 point earned 3 attempts remaining What is the conjugate acid of the Brønsted-Lowry base, HCO3"? O of 1 point earned 3 attempts remaining What is the conjugate acid of the Brønsted-Lowry base, H2PO4" O of 1 point earned 3 attempts remaining What is the conjugate base of the Brønsted-Lowry...
Fill in the missing chemical formulae in the tables below. acid conjugate base base conjugate acid H,CO, H.PO, XS ? H,0 он H,0 clo, Submit I Don't Know At a certain temperature, the equilibrium constant K for the following reaction is 8.0 x 10 NO3(8) + NO(g) – 2 NO,(8) Use this information to complete the following table. A There will be very little NO, and NO. Suppose a 29. L reaction vessel is filled with 2.0 mol of NO3...
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