Equilibrium Question 461

Question: The pH of a solution obtained by mixing 50ml of 0.4NHCl and 50ml of 0.2NNaOH is [KCET 1996]

Options:

A) log2

B) log0.2

C) 1.0

D) 2.0

Show Answer

Answer:

Correct Answer: C

Solution:

N.eq. for HCl=0.41000×50=0.02 N.eq. for NaOH=0.21000×50=0.1 Now [OH] left =0.10.02

[OH]=.08=8×102 M pOH=log8×102 M ; pOH=1.0



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