Q. No.The concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 x 10-4 M. The solubility product of Ag2C2O4 is
1. 2.42 x 10-8
2. 2.66 x 10-12
3. 4.5 x 10-11
4. 5.3 x 10-12
The solubility of AgCl (s) with solubility product 1.6 x 10-10 in 0.1 M NaCl solution would be
(1) 1.26 x 10-5 M
(2) 1.6 x 10-9 M
(3) 1.6 x 10-11 M
(4) zero
Which of the following fluoro-compounds is most likely to behave as a Lewis base?
(1) BF3
(2) PF3
(3) CF4
(4) SiF4
The concentration of Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 × 10–4 mol L–1.
The solubility product of Ag2C2O4 is:
| 1. | 2.66×10–12 | 2. | 4.5×10–11 |
| 3. | 5.3×10–12 | 4. | 2.42×10–8 |
The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N+H) In A 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 × 10–9) is?
1. 0.0060%
2. 0.013%
3. 0.77%
4. 1.6%
The solubility of AgCl (s) with solubility product 1.6×10–10 in 0.1 M NaCl solution would be?
| 1. | 1.26 × 10–5 M | 2. | 1.6 × 10–9 M |
| 3. | 1.6 × 10–11 M | 4. | zero |
Boric acid is an acid because its molecule:
| 1. | contains replaceable H+ ion. |
| 2. | gives up a proton. |
| 3. | accepts OH– from water releasing proton into the solution. |
| 4. | combines with protons from water molecules. |
A 20-litre container at 400 K contains CO2 (g) at pressure 0.4 atm and an excess of SrO (neglecting the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the container.
The maximum volume of the container, when the pressure of CO2 attains its maximum value will be:
(Given that: SrCO3(s) ⇋ SrO(s) + CO2(g) , Kp = 1.6 atm)
| 1. | 10 litre | 2. | 2 litre |
| 3. | 4 litre | 4. | 5 litre |
The solubility of BaSO4 in water is g/ litre at 298 K. The value of the solubility product will be: (Molar mass of BaSO4 = 233 gmol–1)
| 1. | 1.08 × 10–10 mol2 L–2 | 2. | 1.08 × 10–12 mol2 L–2 |
| 3. | 1.08 × 10–14 mol2 L–2 | 4. | 1.08 × 10–8 mol2 L–2 |
At room temperature, MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2 × 10-13. The true statement regarding MY and NY3 is:
| 1. | The molar solubility of MY in water is less than that of NY3. |
| 2. | The salts MY and NY3 are more soluble in 0.5 M KY than in pure water. |
| 3. | The addition of the salt of KY to a solution of MY and NY3 will have no effect on their solubilities. |
| 4. | The molar solubilities of MY and NY3 in water are identical. |
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