Equilibrium
Freezing point of an aqueous solution is (-0.186)°C
Freezing point of an aqueous solution is (-0.186)°C. Elevation of boiling point of the same solution is Kb = 0.512 °C, Kf = 1.86 °C, find the increase in boiling point.
- 0.186 °C
- 0.092 °C
- 0.0512 °C
- 0.2372 °C
The solubility product of a salt having general formula MX2
The solubility product of a salt having general formula MX2, in water is 4 × 10–12. The concentration of M2+ ions in the aqueous solution of the salt is
- 1.6 × 10–4 M
- 1.0 × 10–4 M
- 2.0 × 10–6 M
- 4.0 × 10–10 M
The correct relationship between free energy change
The correct relationship between free energy change in a reaction and the corresponding equilibrium constant Kc is
- ΔG° = RT ln Kc
- -ΔG = RT ln Kc
- -ΔG = RT ln Kc
- -ΔG° = RT ln Kc
Among the following acids which has the lowest pKa value
Among the following acids which has the lowest pKa value?
- HCOOH
- CH3CH2COOH
- (CH3)2CH–COOH
- CH3COOH
Solubility product of silver bromide is 5.0x10^-13
Solubility product of silver bromide is 5.0x10-13. The quantity of potassium bromide (molar mass taken as 120 g mol–1) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is
- 6.2 x 10-5 g
- 5.0 x 10-8 g
- 1.2 x 10-9 g
- 1.2 x 10-10 g