Question

Which of the following combinations would result in a buffered solution when 1.0L of each of...

Which of the following combinations would result in a buffered solution when 1.0L of each of the two solutions are mixed?

Question 2 options:

0.1 M HCl + 0.1 M NaC2H3O2

0.1 M HCl + 0.2 M NaCl

0.2 M HCl + 0.1 M NaF

0.1 M HCl + 0.2 M HC2H3O2

none are correct

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Homework Answers

Answer #1

a) HCl is a strong acid and sodium acetate (weak base) is a conjugate base of acetic acid.

b) HCl is a strong acid and sodium chloride is a conjugate base of HCl. They do not form buffer because only weak substances can make buffers.

c) HCl is a strong acid and sodium fluoride (weak base) is a conjugate base of HF.

d) HCl is a strong acid and acetic acid is a weak acid.

                      These do not form buffer because only weak substances can make buffers. Acidic buffer solution contains equimolar quantities of a weak acid and its salt with strong base. Basic buffer solution contains equimolar quantities of a weak base and its salt with strong acid.

Correct answer is "none are correct".

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