Q. No.The addition of HCl does not suppress the ionization of:
1.
Acetic acid
2.
Benzoic acid
3.
H2S
4.
H2SO4
For the reaction, A+B \(⇌ \)3C at \(25^{\circ}C\), a 3 litre vessel contains 1, 2, and 4 mole of A, B and C respectively. If Kc for the reaction is 10, then the reaction will proceed in:
1. forward direction
2. backward direction
3. in either direction
4. in equilibrium
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 |
What conditions favor the formation of 2XY₄(g) in the reaction X₂(g) + 4Y₂(g) ⇋ 2XY₄(g), considering that the enthalpy change (ΔH) is negative?
1. Low pressure and low temperature
2. High temperature and low pressure
3. High pressure and low temperature
4. High temperature and high pressure
In a buffer solution containing an equal concentration of B- and HB, the Kb for B- is 10-10. pH of the buffer solution is:
| 1. | 10 | 2. | 7 |
| 3. | 6 | 4. | 4 |
The following equilibrium constants are given:
N2 + 3H2 ⇌ 2NH3; K1
N2 + O2 ⇌ 2NO; K2
H2 + 1/2O2 ⇌ H2O; K3
The equilibrium constant for the oxidation of NH3 by oxygen to give NO is:
1.
2.
3.
4.
Which composition will make the basic buffer?
| 1. | 100 mL of 0.1 M HCl+100 mL of 0.1 M NaOH |
| 2. | 50 mL of 0.1 M NaOH+25 mL of 0.1 M CH3COOH |
| 3. | 100 mL of 0.1 M CH3COOH+100 mL of 0.1 M NaOH |
| 4. | 100 mL of 0.1 M HCl+200 mL of 0.1 M NH4OH |
| 1. | \(0 . 5 \times \left(10\right)^{- 10}\) | 2. | \(0 . 5 \times \left(10\right)^{- 15}\) |
| 3. | \(0 . 25 \times \left(10\right)^{- 10}\) | 4. | \(0 . 125 \times \left(10\right)^{- 15}\) |
1. H3O+ and H2F+, respectively.
2. OH– and H2F+, respectively.
3. H3O+ and F–, respectively.
4. OH– and F–, respectively.
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