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Degree hydrolysis (h) of a salt of weak ...

Degree hydrolysis (h) of a salt of weak acid and a strong base is given by

A

`K_w/K_b`

B

K_w/(K_a*K_b)`

C

`K_w/K_a`

D

`(K_a*K_b)/K_w`

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The correct Answer is:
C
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The hydrolysis constant of a salt of weak acid and weak base is inversely proportional to

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The percentage degree of hydrolysis of a salt of weak acid (HA) and weak base (BOH) in its 0.1 M solution is found to be 10%. If the molarity of the solution is 0.05 M, the percentage hydrolysis of the salt should be :

Hydrolysis constant for a salt of weak acid and weak base would be

The extent to which hydrolysis proceeds is expressed as degree of hydrolysis and is defined as fraction of ne mole of the salt that is hydrolysed when equilibrium has been attained . The nature of solution also depends upon the extent upto which the salt has been hydrolysed . Degree of hydrolysis of a salt ofdepends upon concentration of salt at a particular temperature and varies inversely . Consequently , nature of the solution whether acidic or alkaline can be determined . pH of the solution of salt of weak acid and strong base or weak base and strong acid depends upon its concentration . So by varying the concentration of salts their pH could be adjusted . For strong acid and weak base salt solution , the [H_(3)O^(+)] at equilibrium will be

The extent to which hydrolysis proceeds is expressed as degree of hydrolysis and is defined as fraction of ne mole of the salt that is hydrolysed when equilibrium has been attained . The nature of solution also depends upon the extent upto which the salt has been hydrolysed . Degree of hydrolysis of a salt ofdepends upon concentration of salt at a particular temperature and varies inversely . Consequently , nature of the solution whether acidic or alkaline can be determined . pH of the solution of salt of weak acid and strong base or weak base and strong acid depends upon its concentration . So by varying the concentration of salts their pH could be adjusted . For strong base and weak acid litration , the [H_(3)O^(+)] at equivalence point will be

Salt hydrolysis is an acid - base reaction of cation or anion or both ions of salt with water . The resultant solution after hydrolysis may be acidic , basic or neutral . The anion X^(-) which is weaker base than OH^(-) and which has its conjugate acid HX stronger than water but weaker than H_(3)O^(+) shows the phenomenon of hydrolysis , e.g CH_(3)COO^(-) , NO_(2)^(-) , CN^(-) etc. The cation M^(+) which is weaker acid than H_(3)O^(+) and which has its conjugate base MOH stronger than water but weaker than OH^(-) shows the phenomenon of hydrolysis , e.g N_(2)H_(5)^(+), C_(6)H_(5)NH^(+),NH_(4)^(+) etc . The degree of hydrolysis of a salt of weak acid (HA) and weak base (BOH) in its 0.1 M solution is found to be 0.1 .If the molarity of the solution is 0.05 M , the percentage hydrolysis of salt should be :

AAKASH INSTITUTE ENGLISH-MOCK TEST 13-Exercise
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