MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
Madhumita S Srodharan Grade: 12
        

If the pH of a mixture of 10 ml of 0.1 M NH4OH and 10 ml of NH4Cl solution is 8, the pKb value of NH4OH is then closest to


a)3   b)5   c)7   d)9

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

in aqueous solution


NH4OH   ---->  NH4+ + OH-


NH4Cl  --------->  NH4+ + cl-


 Kb for NH4OH = [NH4+][OH-] /NH4OH


here common ion effect is observed ....


 Kb = [NH4Cl][OH-]/NH4OH


     =[OH-]                                     (NH4Cl =NH4OH)


H+ = 10-8                   (given)


OH- =Kw/H+ =10-6


Kb = 10-6


Pkb =6


 

6 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,000 off
USE CODE: CART20
Get extra R 280 off
USE CODE: CART20

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details