The hydrolysis of the salt of a strong acid and a weak base is called:

1. Anionic hydrolysis

2. Cationic hydrolysis

3. Amphoteric hydrolysis

4. None of the above

Subtopic:  Salt Hydrolysis & Titration |
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The relation for calculating pH of a weak base is:

1. pH =pKw -1/2 pKb + 1/2 logc

2. pH =pKw +1/2 pKb - 1/2 logc

3. pH =pKw -1/2 pKa + 1/2 logc

4. none of the above

Subtopic:  Salt Hydrolysis & Titration |
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A solution of FeCl3 in water acts as acidic due to:

1. Acidic impurities                         

2. Ionization

3. Hydrolysis of Fe3+                       

4. Dissociation

Subtopic:  Salt Hydrolysis & Titration |
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pH for the solution of salt undergoing anionic hydrolysis (say CH3COONa) is given by:

1. pH = 12[pKw + pKa + log c]

2. pH = 12[pKw + pKa - log c]

3. pH = 12[pKw + pKb - log c]

4. none of the above

Subtopic:  Salt Hydrolysis & Titration |
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The pH of 0.1 M solution of anilium chloride is (Ka of C6H5NH3+ = 10-6)

(1) 3.5

(2) 3

(3) 4.5

(4) none of these

Subtopic:  pH calculation | Salt Hydrolysis & Titration |
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The most hydrolyzed salt among the following is-

(Assume that Kb of all weak bases is the same)
1. NH4Cl
2. CuSO4
3. AlCl3
4. All are equally hydrolyzed.

Subtopic:  Salt Hydrolysis & Titration |
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The ionisation constant of ammonium hydroxide is 1.77 x 10-5 at 298 K. Hydrolysis constant of ammonium chloride is

1. 5.65 x 10-10

2. 6.50 x 10-12

3. 5.65 x 10-13

4. 5.65 x 10-12

Subtopic:  Kp, Kc & Factors Affecting them | Salt Hydrolysis & Titration |
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A certain acid–base indicator is red in acid solution and blue in basic solution 75% of the indicator is presentin the solution in its blue form at pH = 5. Calculate the pH at which the indicator shows 90% red form?

(1) 3.56

(2) 5.47

(3) 2.5

(4) 7.4

Subtopic:  Salt Hydrolysis & Titration |
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Ionisation constant of HA (weak acid) and BOH (weak base) are 3.0 x 10–7 each at 298K. The percent degree of hydrolysis of BA at the dilution of 10L is :

1. 25

2. 50

3. 75

4. 40

Subtopic:  Salt Hydrolysis & Titration |
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Assertion : 0.20 M solution of NaCN is more basic than 0.20 M solution of NaF.

Reason : 0.20 M solution of NaCN  is more basic than 0.20 M solution of CH3COONa.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Salt Hydrolysis & Titration |
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