(4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of...

Question

Question

(4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of sodium formate (NaCHO2). Formic acid is a weak aci

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

#4) Given :- Buffer contains 0.500 M of famic acid (HCHO), and 0.500H S Sodium formate (Na CHO) Ka=1.8x10 4 solution :- Farm pka = -log Ka = -log (1.8x104) pka = 3.74 [H CHO = 3.74 + loa 0.50014 Y 0.560 M pH = 3.74 . The pH of the buffer solution is

The pH of the buffer solution is 3.74

Add a comment

Answer 2

Similar Homework Help Questions

Suppose a buffer solution is made from formic acid, HCHO2, and sodium formate, NaCHO2. What is...

Suppose a buffer solution is made from formic acid, HCHO2, and sodium formate, NaCHO2. What is the net ionic equation for the reaction that occurs when a small amount of sodium hydroxide is added to the buffer? Select one: a. H3O+(aq) + OH–(aq) → 2H2O(l) b. OH–(aq) + HCHO2(aq) → CHO2–(aq) + H2O(l) c. NaOH(aq) + H3O+(aq) → Na+(aq) + 2H2O(l) d. NaOH(aq) + HCHO2(aq) → NaCHO2(aq) + H2O(l)
The salt sodium formate, NaCHO2(s), completely dissociates into Na+(aq) and CHO2−(aq) in an aqueous environment. The...

The salt sodium formate, NaCHO2(s), completely dissociates into Na+(aq) and CHO2−(aq) in an aqueous environment. The Na+ ion has no acid or base properties, but the formate ion is the conjugate base of the weak acid, formic acid. Part a. Write a balanced chemical equation showing how the formate ion reacts with water to affect the pH of the resulting solution (you can ignore the sodium ion in your balanced equation). Part b. Find the pH of a 0.100 M...
a. Find the pH of a solution that is 0.500 M in formic acid and 0.250...

a. Find the pH of a solution that is 0.500 M in formic acid and 0.250 M in sodium formate. K. (formic acid) = 1.8 x 10-4 pH- b. Find the pH after 0.100 mol HCl has been added to 1.00 liter of the solution. pH =

Using Henderson-Hasselbalch equation, Calculate the pH of a buffer solution that is 0.060 M formic acid...

Using Henderson-Hasselbalch equation, Calculate the pH of a buffer solution that is 0.060 M formic acid (HCHO) and 0.150 M potassium formate (KCHO2). Remember that Kg = 1.8 X 10-4 for formic acid. O 1.45 O 2.36 09.12 4.13 O 0.0125 7.00
QUESTION 6 If a formic acid buffer contains 0.100 moles of formic acid and 0.100 moles...

QUESTION 6 If a formic acid buffer contains 0.100 moles of formic acid and 0.100 moles of sodium formate, how many moles of each will be present after addition of 0.010 moles of HCl? a) 0.100 moles of formic acid and 0.110 moles of sodium formate b) 0.110 moles of formic acid and 0.090 moles of sodium formate c) 0.110 moles of formic acid and 0.100 moles of sodium formate d) 0.090 moles formic acid and 0.110 moles of sodium...
23. A 1.0 L buffer solution is prepared with 0.25 M formic acid (HCOOH) and 0.50...

23. A 1.0 L buffer solution is prepared with 0.25 M formic acid (HCOOH) and 0.50 M sodium formate (HCOONa). HCOOH(aq) + H2O(aq) – HCOO (aq) + H30+(aq) pKa = 3.74 What is the pH of this buffer solution? (A) 3.74 (B) 4.04 (C) 4.50 (D) 4.20

QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4) with a...

QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4) with a pH = 4.00, what ratio of formic acid to sodium formate is required? (Notice that I am asking for the ratio of acid to base, not base to acid!) a) 1.25 b) 0.56 c) 0.82 d) 1.87 QUESTION 4 If you find that you need an acid to base ratio of 4.23 and you are using 50.00mL of a 1.00M acid solution, what volume...
Using Henderson-Hasselbalch equation, Calculate the pH of a buffer solution that is 0.060 M formic acid...

Using Henderson-Hasselbalch equation, Calculate the pH of a buffer solution that is 0.060 M formic acid (HCHO2) and 0.150 M potassium formate (KCHO2). Remember that Ka = 1.8 X 10-4 for formic acid. Group of answer choices A 1.45 B 2.36 C.9.12 D.4.13 E. 0.0125 F. 7.00
Calculate the pH of a buffer solution that is 0.30 M formic acid (HCO2H) and 0.50...

Calculate the pH of a buffer solution that is 0.30 M formic acid (HCO2H) and 0.50 M sodium formate (HCO2Na). Ka of HCO2H is 1.8 x 10-4

A buffer is composed of formic acid and its conjugate base, the formate ion. K for...

A buffer is composed of formic acid and its conjugate base, the formate ion. K for formic acid is 1.8 x 10. a What is the pH of a solution that has a formic acid concentration of 0.020 M and a sodium formate concentration of 0.055 M? pH

(4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of...

Homework Answers

Add Answer to:
(4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of...

Post as a guest

Earn Coins

Suppose a buffer solution is made from formic acid, HCHO2, and sodium formate, NaCHO2. What is...

The salt sodium formate, NaCHO2(s), completely dissociates into Na+(aq) and CHO2−(aq) in an aqueous environment. The...

a. Find the pH of a solution that is 0.500 M in formic acid and 0.250...

Using Henderson-Hasselbalch equation, Calculate the pH of a buffer solution that is 0.060 M formic acid...

QUESTION 6 If a formic acid buffer contains 0.100 moles of formic acid and 0.100 moles...

23. A 1.0 L buffer solution is prepared with 0.25 M formic acid (HCOOH) and 0.50...

QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4) with a...

Using Henderson-Hasselbalch equation, Calculate the pH of a buffer solution that is 0.060 M formic acid...

Calculate the pH of a buffer solution that is 0.30 M formic acid (HCO2H) and 0.50...

A buffer is composed of formic acid and its conjugate base, the formate ion. K for...

(4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of...

Homework Answers

Add Answer to: (4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of...

Post as a guest

Earn Coins

Add Answer to:
(4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of...