
buffer solutions
Quiz
•
Chemistry
•
12th Grade
•
Hard
M Amfo
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20 questions
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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
Acidic buffer is made up of
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which solution A and B of equal volume and concentration mixed together to form a buffer?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following could be added to a solution of ethanoic acid to prepare a buffer?
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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