The equilibrium of three reactions with their respective equilibrium constants are given below,
\( \begin{array}{lc} \mathrm{N}_2+3 \mathrm{H}_2 \rightleftharpoons 2 \mathrm{NH}_3 & \mathrm{~K}_1 \\ \mathrm{~N}_2+\mathrm{O}_2 \rightleftharpoons 2 \mathrm{NO} & \mathrm{K}_2 \\ \mathrm{H}_2+\frac{1}{2} \mathrm{O}_2 \rightleftharpoons \mathrm{H}_2 \mathrm{O} & \mathrm{K}_3 \end{array} \)
The equilibrium constant (K) of the following reaction will be :
1. \( \frac{K_{2}K_{3}^{3}}{K_{1}}\)
2. \( \frac{K_{2}K_{3}}{K_{1}}\)
3. \( \frac{K_{2}^{3}K_{3}}{K_{1}}\)
4. \( \frac{K_{3}^{3}K_{1}}{K_{2}}\)
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 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 Lewis base among the following is:
1. | BF3 | 2. | PF3 |
3. | CF4 | 4. | SiF4 |
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 following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations :
A)
B)
C)
D)
pH of which one of them will be equal to 1?
1. B
2. A
3. D
4. C
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 |
Mark the conditions that favour the maximum product formation in the given reaction.
1. Low temperature and High pressure
2. Low temperature and Low pressure
3. High temperature and High pressure
4. High temperature and Low pressure
Among the following, the correct order of acidity is:
1. HClO < HClO2 < HClO3 < HClO4
2. HClO2 < HClO < HClO3 < HClO4
3. HClO4 < HClO2 < HClO < HClO3
4. HClO3 < HClO4 < HClO2 < HClO