N Awasthi Physical Chemistry

In which of the following reactions the formation of product is favoured by decrease in temperature ? (1)N2(g)+O2(g)⇔2NO(g), ΔH∘=181 (2)2CO2(g)⇔2CO(g)+O2(g), ΔH∘=566 (3)H2(g)+I2⇔2HI(g), ΔH∘=−9.4 (4)H2(g)+F2(g)⇔2HF(g), ΔH∘=−541 In which of the following reactions the formation of product is favoured by decrease in temperature ? (1)N2(g)+O2(g)⇔2NO(g) ΔH∘=−541 ΔH∘=−9.4 (4)H2(g)+F2(g)⇔2HF(g) ΔH∘=181 (2)2CO2(g)⇔2CO(g)+O2(g) ΔH∘=566 (3)H2(g)+I2⇔2HI(g) November 11, 2020 Category: Chapter [...]

Consider the following reactions .In which case the formation of product is favoured by decrease in pressure? (1)CO2(g)+C(s)⇔2CO(g), ΔH∘=+172.5Kj (2)N2(g)+3H2(g)⇔2NH3(g)⇔2NH3(g), ΔH∘=−91.8KJ (3) N2(g)+O2(g)⇔2NO(g), ΔH∘=181KJ (4) 2H2O(g)⇔2H2(g)+O2(g), ΔH∘=484.6KJ Consider the following reactions .In which case the formation of product is favoured by decrease in pressure? (1)CO2(g)+C(s)⇔2CO(g) ΔH∘=+172.5Kj (2)N2(g)+3H2(g)⇔2NH3(g)⇔2NH3(g) ΔH∘=−91.8KJ (3) N2(g)+O2(g)⇔2NO(g) ΔH∘=181KJ (4) 2H2O(g)⇔2H2(g)+O2(g) ΔH∘=484.6KJ November [...]

Le Chatelier principal is not applicable to: Le Chatelier principal is not applicable to: November 11, 2020 Category: Chapter 5 - Chemical Equilibrium (Level 1 and Level 2) , N Awasthi Physical Chemistry ,

In a vessel N2 ,H2 ​and NH3 ​are at equilibrium. Some helium gas is introduced into the vessel so that total pressure increases while temperature and volume remain constant. According to Le Chatelier’s principle, the dissociation of NH 3 ​ : H2 ​and NH3 ​are at equilibrium. Some helium gas is introduced into the vessel [...]

The preparation of SO3 (g) by reaction SO2 ​ (g)+ 2/1 O2 ​⇌ SO3 (g) is an exothermic reaction. If the preparation follows the shown temperature-pressure relationship for its % yield at temperatures T1 ​ ,T2 ​and T3, then the correct relation between T1 ,T2 ​and T3 ​is: The vapour pressure of mercury is 0.002mm [...]

Consider the reaction where Kp ​ = 0.497 at 500K PCI5(g) ⇌ PCI3(g) + Cl2(g) if the three gaess are mixed in a rigid container so that the partial pressure of each gas is initially 1 atm, then which is correct observation ? Consider the reaction where Kp ​ = 0.497 at 500K PCI5(g) ⇌ [...]

The volume of the reaction vessel containing an equilibrium mixture is increased in the following reaction. SO2Cl2(g) ​⇌ SO2(g)+Cl2(g) . \ When equilibrium is re-established : The volume of the reaction vessel containing an equilibrium mixture is increased in the following reaction. SO2Cl2(g) ​⇌ SO2(g)+Cl2(g) . \ When equilibrium is re-established : November 11, 2020 [...]

Some inert gas is added at constant volume to the following reaction at equilibrium N4HS(s)⇔NH3(g)+H2s(g) predict the effect of adding the inert gas: Some inert gas is added at constant volume to the following reaction at equilibrium N4HS(s)⇔NH3(g)+H2s(g) predict the effect of adding the inert gas: November 11, 2020 Category: Chapter 5 - Chemical Equilibrium [...]

For the reaction, N2(g) +3H2(g) ​⇌2NH3(g) . The number of moles of H2 at equilibrium will increase if: For the reaction N2(g) +3H2(g) ​⇌2NH3(g) . The number of moles of H2 at equilibrium will increase if: November 11, 2020 Category: Chapter 5 - Chemical Equilibrium (Level 1 and Level 2) , N Awasthi Physical Chemistry [...]

In which of the following equilibrium, change in the volume of the system does not alter the number of moles? change in the volume of the system does not alter the number of moles? In which of the following equilibrium November 11, 2020 Category: Chapter 5 - Chemical Equilibrium (Level 1 and Level 2) , [...]