A 50 ml solution of strong acid of pH = 1 is mixed with a 50 ml solution of strong acid of pH=2. The pH of the mixture will be nearly:
(log 5.5 = 0.74)
1. 0.74
2. 1.26
3. 3.76
4. 4.50
1 litre solution of pH =4 (solution of a strong acid) is added to the 7/3 litre of water. What is the pH of resulting solution. (Log 3 = 0.48)
1. 4
2. 4.48
3. 4.52
4. 5
The pH of a solution obtained by mixing 50ml of 0.4N HCl and 50ml of 0.2M NaOH is:
1. 13
2. 12
3. 1.0
4. 2.0
Kb for a monoacidic base whose 0.10 M solution has a pH of 10.48
1. 9 X 10-6
2. 9 X 10-9
3. 9 X 10-7
4. 3 X 10-7
In an acidic Buffer solution (CH3COOH + CH3COONa), the species mainly present in the solution are:
(Ignore negligible amount)
1. CH3COOH, CH3COO-, CH3COONa, H+
2. CH3COO-, Na+, CH3COOH
3. CH3COONa, CH3COO-, H+
4. CH3COO-, Na+, H+, CH3COONa
When NH4Cl is added in NH4OH solution, then pH of the solution
1. Increases
2. Decreases
3. Remains unchanged
4. Firstly decreases and more than decreases
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.
The pH of 10-6 M CH3COOH (Ka = 1.8 X 10-5) is:
1. 5.37
2. In between 6 & 7
3. 7
4. 8.63
60 ml 1M CH3COOH is mixed with 20 ml 1 M NaOH then pH of resulting solution will be
(Ka = 1.8 X 10-5, log1.8 = 0.25)
1. 8.55
2. 4.95
3. 4.45
4. 7.45
In which solvent, solubility of AgCl is maximum ?
1. 0.01 M NaCl
2. Pure Water
3. 0.01 M NH4OH
4. 0.05 M AgNO3