Equilibrium - Result Question 37

####39. Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations :

[2018] a. 60mLM10HCl+40mLM10NaOH b. 55mLM10HCl+45mLM10NaOH c. 75mLM5HCl+25mLM5NaOH d. 100mLM10HCl+100mLM10NaOH

pH of which one of them will be equal to 1 ?

(a) b

(b) a

(c) c

(d) d

Show Answer

Solution:

  1. (c) Meq. of HCl=75×15×1=15

Meq. of NaOH=25×15×1=5

Meq. of HCl in resulting solution =10

Molarity of [H+]in resulting mixture =10100=110

pH=log[H+]=log[110]=1.0



NCERT Chapter Video Solution

Dual Pane