MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
anuj MISHRA Grade:
        

how to know which one is stronger scid n stronger base

6 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear student,


The strength of acids and bases are dependent on their ionization constant (Ka and Kb, respectively) values.

1. Assuming all three have the same concentrations,
H2CO3 < CH3COOH < HCl

Reason: HCl is a strong acid. It is a 'given' (usually, strong acids have the formula HX, where X is a halogen). CH3COOH has a Ka value of 1.8x10^-5 while H2CO3 has a Ka value of 4.2x10^-7. The higher the Ka or Kb, the stronger it is.

2. Assuming both have the same concentrations,
OH- is a stronger base. Again, this is sort of a 'given'. Or another way to approach this problem is that NH3 has a Kb value of 1.8x10^-5.

NH4+ is a stronger acid. Remember this, "the conjugate acid of a weaker base is a stronger acid". Since NH4+ is the conjugate acid (has one H+ or one proton extra) of NH3, it is stronger than H2O, the conjugate acid of water.


 





Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.


All the best.


Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.


Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..


 


Askiitians Expert


Sagar Singh


B.Tech, IIT Delhi




6 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: Rs. 15,900
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

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