An aqueous mixture at room temperature is 0.1 M with respect to ammonium chloride and 0.01 M with respect to N H 4 O H ; p K b of aqueous ammonia as a base is 5. The pH of the mixture is nearly

Question

An aqueous mixture at room temperature is 0.1 M with respect to ammonium chloride and 0.01 M with respect to N H 4 O H ; p K b of aqueous ammonia as a base is 5. The pH of the mixture is nearly, 7.5, 6.8, 6.5, 8.0

MARKS App · Accepted Answer

p O H = p K b + l o g [ S a l t ] [ B a s e ] So 14 - p H = 5 + l o g 0.1 M 0.01 M = 5 + l o g 10 = 5 + 1 = 6 or p H = 14 - 6 = 8.0 .

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