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Buffers

Authored by Caroline Humes

Chemistry

9th - 12th Grade

NGSS covered

Used 18+ times

Buffers
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12 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

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Buffer is defined as

ability to resist pH change
ability to prevent pH from decreasing
ability to resist a pH increase
ability to resist pH change when small amount of acid added

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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Acidic buffer is made up of

weak acid and weak base
weak acid and its conjugate salt
weak acid and its conjugate base
strong acid and its conjugate base

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

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Basic buffer is made up of

weak base and weak acid
weak base and its conjugate salt
weak base and its conjugate acid
strong base and its conjugate acid

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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Which solution A and B of equal volume and concentration mixed together to form a buffer?

Hydrochloric acid and potassium chloride

Nitric acid and potassium nitrate

Acetic acid and potassium hydroxide

Sulfurous acid and potassium sulfite

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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Which combination will form a buffer solution?

100ml of 0.1M HCI with 50ml of 0.1M NaOH
100ml of 0.1M CH3COOH with 50ml of 0.1M NaOH
50ml of 0.1M HCI with 100ml of 0.1M NaOH
50ml of 0.1M CH3COOH with 100ml of 0.1M NaOH

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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Which of the following could be added to a solution of ethanoic acid to prepare a buffer?

NaOH
HCI
NaCI
More ethanoic acid

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

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Which solutions have a pH less than 7?

I and II
I and III
II and III
I, II and III

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