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. |
When equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed, the pH of the resulting solution will be:
1. | 12.65 | 2. | 2.0 |
3. | 7.0 | 4. | 1.04 |
An acidic buffer cannot be formed by which of the following combinations is:
1.
2.
3.
4.
If the equilibrium constant for N2(g) + O2 (g) ⇄ 2NO(g) is K, the equilibrium constant for \(\frac{1}{2}\)N2(g) + \(\frac{1}{2}\)O2(g) ⇄ NO(g) will be?
1.
2.
3. K
4.
The value of the equilibrium constant for a particular reaction is 1.6 × 1012. When the system is in equilibrium, it will include:
1. All reactants
2. Mostly reactants
3. Mostly products
4. Similar amounts of reactants and products
The Ksp of Ag2CrO4, AgCl, AgBr, and Agl are respectively, 1.1 × 10–12, 1.8 × 10–10, 5.0 × 10–13, 8.3 × 10–17. Which one of the following salts will precipitate last if solution is added to the solution containing equal moles of NaCl, NaBr, Nal, and Na2CrO4?
1. Agl
2. AgCl
3. AgBr
4. Ag2CrO4