The pH value of a 0.01 M solution of an organic acid is 4.15. The pKa of the acid will be:
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A solution containing 2 g of TlOH in 2 litres of water has a pH of?
(Atomic wt of Tl =204)
1. | 11.65 | 2. | 12.45 |
3. | 3.35 | 4. | 2.34 |
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When 1mL of 13.6 M HCl is diluted with water to give 1 litre of solution, the pH of the resultant solution will be:
1. | 11.87 | 2. | 3.46 |
3. | 1.87 | 4. | 12.23 |
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A 0.001 M aniline solution has a pH of:
(\(K_b = 4.27 \times 10^{-10}\))
1. | 6.19 | 2. | 7.81 |
3. | 8.34 | 4. | 9.81 |
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The degree of ionization of 0.05 M acetic acid is:
(pKa = 4.74)
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The percentage ionization of 0.02 M dimethylamine solution if it also contains 0.1 M NaOH solution (Kb of dimethylamine = 5.4 × 10–4 ) will be :
1. 0.54%
2. 0.05%
3. 5.40%
4. 54.00%
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0.561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. The pH of the solution will be
1. | 12.70 | 2. | 1.30 |
3. | 3.14 | 4. | 11.70 |
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At 298 K, the solubility of Sr(OH)2 is 19.23 g/L. The pH of the solution will be:
1. | 1.50 | 2. | 13.50 |
3. | 0.50 | 4. | 12.45 |
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The pH of a 0.1 M solution of cyanic acid (HCNO) is 2.34. The ionization constant of the acid will be:
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The ionization constant of nitrous acid is 4.5 × 10–4. The pH of a 0.04 M sodium nitrite solution will be:
1. 2.56
2. 6.14
3. 7.96
4. 11.74
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