MEDIUM
JEE Main/Advance
IMPORTANT
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Kb1 of N2H4 is 4×10-6. Then, what is the acid dissociation constant of N2H5+ and N2H62+ respectively?

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Important Questions on Equilibrium

MEDIUM
JEE Main/Advance
IMPORTANT

For ortho phosphoric acid,

H3PO4(aq)+H2O(aq)H3O+(aq)+H2PO4-(aq); Ka1

H2PO4-(aq)+H2O(aq)H3O+(aq)+HPO42-(aq); Ka2

HPO42-(aq)+H2O(aq)H3O+(aq)+PO43-(aq); Ka3

The correct order of Ka values is:

HARD
JEE Main/Advance
IMPORTANT

In a solution of 0.1 M H3PO4 acid: (Given Ka1=10-3,Ka2=10-7,Ka3=10-12

Concentration of H3PO4 is:

HARD
JEE Main/Advance
IMPORTANT

In a solution of 0.1 M H3PO4 acid: (Given Ka1=10-3, Ka2=10-7, Ka3=10-12

Concentration of H2PO4- is:

HARD
JEE Main/Advance
IMPORTANT

In a solution of 0.1 M H3PO4 acid : (Given Ka1=10-3, Ka2=10-7, Ka3=10-12

Concentration of HPO42- is:

HARD
JEE Main/Advance
IMPORTANT

In a solution of 0.1 M H3PO4 acid: (Given Ka1=10-3, Ka2=10-7, Ka3=10-12

Concentration of PO43- is:

MEDIUM
JEE Main/Advance
IMPORTANT

In a solution of 0.1 M H3PO4 acid: (Given Ka1=10-3, Ka2=10-7, Ka3=10-12

pH of solution is:

MEDIUM
JEE Main/Advance
IMPORTANT
Generally, in aqueous solutions of weak polyacidic bases, OH- ions produced from 2nd ionisation are negligible because of:
MEDIUM
JEE Main/Advance
IMPORTANT
The dissociation constant of acetic acid at a given temperature is 1.69×10-5. The degree of dissociation of 0.01 M acetic acid in the presence of 0.01 M HCl is equal to: