buffer solutions

buffer solutions

12th Grade

20 Qs

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buffer solutions

buffer solutions

Assessment

Quiz

Chemistry

12th Grade

Hard

Created by

M Amfo

Used 5+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The buffer solution is able to maintain pH by some events, except . . .

The addition of a little acid

The addition of a little base

Dilution

Addition of water

The addition of excess acid

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The pH solution that consist of CH3COOH 0.01 M and CH3COONa 0.01 M with Ka = 10-5 is . . .

4

5

6

8

9

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

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

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

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

Nitric acid and potassium hydroxide
Nitric acid and potassium nitrate
Propanoic acid and potassium hydroxide
Propanoic acid and potassium propanoate

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

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

NaOH
HCI
NaCI
More ethanoic acid

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which of the following statements ARE TRUE about buffer solution?


(you may choose more than one answer)

pH of buffer solution will never change despite addition of small amount of base or acid

Buffer can be made by mixing weak acid and salt of its conjugate base or by mixing weak base with salt of its conjugate acid

Buffer has acid and base components that can work specifically to resist pH change

the closer the ratio of concentration weak acid/base to the concentration of salt of its conjugate base/acid, the less effective the buffer to resist pH change

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What statement is true about basic buffer?

basic buffer usually works effectively at pH range of above 7

It's made of a mixture of strong base and salt of its conjugate acid

adding small amount of strong acid to the solution of basic buffer can significantly alter the pH of the buffer solution

diluting solution of basic buffer cause pH of that solution to change drastically

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