Consider the following reaction:
If the reaction mixture contains 0.30 mol of CO, 0.10 mol of H2, and 0.02 mol of H2O, and an unknown amount of CH4 at equilibrium at 1300 K in a 1L flask, the concentration of CH4 in the mixture will be -
(Kc = 3.90 at 1300 K)
The concentration of hydrogen ion in a sample of soft drink is . The pH of the soft drink will be:
1. | 3.14
|
2. | 2.42
|
3. | 11.58
|
4. | 6.00 |
The pH of a sample of vinegar is 3.76. The concentration of H+ ions in the sample will be -
The pH value of a 0.01 M solution of an organic acid is 4.15. The pKa of the acid will be:
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 |
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 |
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 |
The degree of ionization of 0.05 M acetic acid is:
(pKa = 4.74)
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%
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 |