Q.

Which of the following mixture acts as buffer solution ?

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a

100 ml 0.2 N CH3COOH + 100 ml of 0.1 M NaOH

b

100 ml 0.1 M CH3COOH + 100 ml 0.2M NaOH

c

100 ml 0.2M CH3COOH + 100 ml 0.2 M NaOH

d

None of the above acts as buffer solution due to the presence of strong base, NaOH

answer is A.

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Detailed Solution

Millimoles of CH3COOH = 100 0.2 = 20Millimoles of NaOH = 100 0.1 = 10                                        Finally the system contains.1) CH3COOH which is a weak acid.2)  CH3COONa which is the salt of CH3COOH.
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