Q.

To a one litre solution containing 8 grams of sodium hydroxide, 14.7 grams of sulphuric acid is added. pH of the solution at 298 K is

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a

2

b

2.3010

c

7

d

1

answer is D.

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Detailed Solution

Number of gram equivalents of base = 8/40 = 0.2 Number of gram equivalents of acid = 14.7/49 = 0.3Nature of resultant solution is acidicNumber of gram equivalents of acid left = (0.3 - 0.2)∴H+=0.1×11H+=0.1MpH=1
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