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Buffer Basics

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What are buffers?

Compounds that enhance changes in pH upon the addition of small quantities of acid or alkali

Compounds that resist changes in pH upon the addition of small quantities of acid or alkali (correct)

Compounds that only work in acidic solutions

Compounds that only work in basic solutions

What is the composition of a buffer solution?

A weak acid and its conjugate base, or a weak base and its conjugate acid (correct)

A strong acid and a strong base

Only a weak base

Only a weak acid

What happens to the pH when 1ml of 0.1 N HCl solution is added to 100ml of pure water?

The pH is reduced from 7 to 3 (correct)

The pH becomes erratic

The pH remains the same at 7

The pH is increased from 7 to 10

What happens to the pH when a strong acid is added to a 0.01 M solution containing equal quantities of acetic acid and sodium acetate?

<p>The pH changes only by 0.09 units because the base AC⁻ ties up the H⁺ ion</p> Signup and view all the answers

What happens to the buffer solution when a strong base is added?

<p>The equation shifts to the right, tying up OH⁻ ion</p> Signup and view all the answers

Buffer Basics

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Questions and Answers

What are buffers?

What is the composition of a buffer solution?

What happens to the pH when 1ml of 0.1 N HCl solution is added to 100ml of pure water?

What happens to the pH when a strong acid is added to a 0.01 M solution containing equal quantities of acetic acid and sodium acetate?

What happens to the buffer solution when a strong base is added?

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