______________ equation gives the effect of temperature on heat of reaction ?

Related Mcqs:

1. If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will___________________?

   A. Increase
   B. Decrease
   C. Remain unaltered
   D. Increase or decrease; depends on the particular reaction

2. 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

3. The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is____________________?

   A. 100,000 kW
   B. 160,000 kW
   C. 200,000 kW
   D. 320,000 kW

4. The equation, (d loge PA/d loge xA) = (d loge PA/d loge xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the _____________ equation?

   A. Van Laar
   B. Margules
   C. Gibbs-Duhem
   D. Gibbs-Duhem-Margules

5. As per Kirchhoff s equation, the heat of reaction is affected by the__________________?

   A. Pressure
   B. Volume
   C. Temperature
   D. Molecularity

6. The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?

   A. +816.15
   B. +1632.3
   C. -1632.3
   D. -2448.45

7. The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at ______________ percent relative humidity ?

   A. 0
   B. 100
   C. 50
   D. None of these

8. The heat change for the reaction, C(s) + 2S(s) → CS2(l), is 104.2 kJ. It represents the heat of_________________?

   A. Formation
   B. Solution
   C. Combustion
   D. Fusion

9. Clausius-Clapeyron Equation gives accurate result, when the __________________?

   A. Vapour pressure is relatively low and the temperature does not vary over wide limits
   B. Vapour obeys the ideal gas law and the latent heat of vaporisation is constant
   C. Volume in the liquid state is negligible compared with that in the vapour state
   D. All A, B. and C

10. The variation of heat of reaction with temperature at constant pressure is given by the ____________ law?

    A. Kelvin’s
    B. Antoine’s
    C. Kirchoff’s
    D. None of these