The quantitative effect of temperature on chemical equilibrium is given by the____________________?

Related Mcqs:

1. At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?

   A. μ° + RT ln f B. μ°+ R ln f C. μ° + T ln f D. μ° + R/T ln f...

2. Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is________________?

   A. 0 B. 1 C. ∞ D. None of these...

3. “When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change.” This is called the_______________?

   A. Le-Chatelier principle B. Kopp’s rule C. Law of corresponding state D. Arrhenius hypothesis...

4. When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is___________________?

   A. Same in both the phases B. Zero in both the phases C. More in vapour phase D. More in liquid phase...

5. Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be___________________?

   A. Same B. Doubled C. Halved D. One fourth of its original value...

6. Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the ____________ equation?

   A. Gibbs-Duhem B. Maxwell’s C. Clapeyron D. None of these...

7. The equilibrium constant for a chemical reaction at two different temperatures is given by__________________?

   A. Kp2/Kp1 = – (ΔH/R) (1/T2 – 1/T1) B. Kp2/Kp1 = (ΔH/R) (1/T2 – 1/T1) C. Kp2/Kp1 = ΔH (1/T2 – 1/T1) D. Kp2/Kp1 = – (1/R) (1/T2 – 1/T1)...

8. The free energy change for a chemical reaction is given by (where, K = equilibrium constant)________________?

   A. RT ln K B. -RT ln K C. -R ln K D. T ln K...

9. A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg-1. K-1. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg-1, K-1 is_________________?

   A. -1.87 B. 0 C. 1.26 D. 3.91...

10. The necessary condition for phase equilibrium in a multiphase system of N components is that the____________________?

    A. Chemical potentials of a given component should be equal in all phases B. Chemical potentials of all components should be same in a particular phase C. Sum of the chemical potentials of any given component in all the phases should be the same D. None of these...