Please solve Q 0 05 M ammonium hydroxide solution is dissolved in 0 001 - Chemistry -

Question

Please solve

Q 0 05 M ammonium hydroxide solution is dissolved in 0 001 M
ammonium chloride solution What will be the O H - ion concentration
of this solution : K b N H 4 O H   =   1 8 × 10 -
5

1         3 0   × 10 - 3  
                 
  2         9 0   × 10 - 4 3
        9 0   × 10 - 3    
                  4
        3 0   × 10 - 4

Vartika Jain · Accepted Answer

Dear Student,

According to Henderson-Haselbach equation, pOH=pKb- log[Base][Salt]pOH=pKb- log[NHOHl][NH4Cl]or, pOH= -log (1
8×10-5)-log(0 05)(0
001)              =-[log(1
8)-5log10]-log (50)              =-0
255+5-1
69              =4
74-1
69              =3
05or, -log [OH-]=3 05or  [OH-] =10-3
05 = 8
9×10-4 ≈ 9×10-4Hence, correct answer is (2)

Please solve Q. 0.05 M ammonium hydroxide solution is dissolved in 0.001 M ammonium chloride solution . What will be the O H - ion concentration of this solution : K b N H 4 O H = 1 . 8 × 10 - 5 1 3 . 0 × 10 - 3 2 9 . 0 × 10 - 4 3 9 . 0 × 10 - 3 4 3 . 0 × 10 - 4