Home

In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is

A. More

B. Less

C. Same

D. Unpredictable; depends on the particular reaction

Related Questions

  1. When a gas in a vessel expands, its internal energy decreases. The process involved is
  2. Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is - 57°C…
  3. When dilute aqueous solutions of two salts are mixed, the process is associated with
  4. Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole.…
  5. Refrigerants commonly used for domestic refrigerators are
  6. The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume…
  7. A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the…
  8. Gibbs free energy of mixing at constant pressure and temperature is always
  9. Enthalpy of a gas depends upon its
  10. At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.
  11. Fugacity and pressure are numerically not equal for the gases
  12. The free energy change for a chemical reaction is given by (where, K = equilibrium constant)
  13. Generation of heat by friction is an example of a/an __________ change.
  14. In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process.
  15. For a constant volume process
  16. What happens in a reversible adiabatic compression?
  17. For a stable phase at constant pressure and temperature, the fugacity of each component in a binary…
  18. A system in which there is exchange of energy but not of mass, is called a/an __________ system.
  19. (∂E/∂T)V is the mathematical expression for
  20. Which of the following is not a reversible process?
  21. Which one is true for a throttling process?
  22. Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P,…
  23. Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes.
  24. In case of steady flow compression polytropic process (PVn = constant), the work done on air is the…
  25. 4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is
  26. Which of the following has the minimum value of COP for a given refrigeration effect?
  27. The total change in the enthalpy of a system is independent of the
  28. In the reaction, represented by, 2SO2 + O2 2SO3; ΔH = - 42 kcal; the forward reaction will be favoured…
  29. Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called…
  30. The adiabatic throttling process of a perfect gas is one of constant enthalpy

Please do not use chat terms. Example: avoid using "grt" instead of "great".