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.