Ionic Equilibrium

Question 1

pH due to addition of water

Answer 1

pH’= pH + Log n

Question 2

pH of a solution containing weak acid or weak base

Answer 2

Calculate α=√ka/C

If α

Question 3

pH for neutralisation of strong acid and strong base

Answer 3

Calculate mill implies of H+ from strong acid and millimoles of OH- from strong base. React H+ and OH - irreversibly to form water. If both the limiting agent then pH of sol =7
For OH- is limiting agent then
pH= - log ( millimoles of H+ remaining/ volume in mL)
Else pOH= -log ( millimoles of OH- remaining / volume in ml)

Question 4

pH in salt hydrolysis

Answer 4

Calculate degree of hydrolysis h = √kW÷C.kA

If h

Question 5

How to calculate degree of hydrolysis h of salt of weak acid and weak base ?

Answer 5

pH=7 + 1/2 ( pka -pkb)
h= √kh÷1+√kh
The eq of pH does not contain any conc hence as long as salt is same , ph remains same irrespective of conc.

Question 6

How to calculate pH of amphiprotic salt ?

Answer 6

pH= pKa+pKa2/2

Question 7

How to calculate pH of buffer sol of weak acid and its conjugate base

Answer 7

pH= pKa+ log [salt]/[acid]

Acidic buffer

Question 8

How to calculate ph of buffer sol of weak base and its conjugate acid

Answer 8

pOH = pkb + log [salt]/[base] ( Basic buffer )

Question 9

How to calculate pH of Na₂CO₃?

Answer 9

Calculate h=√kW÷C x ka2

If h