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For the process occurring at constant .....

For the process occurring at constant ....... `DeltaH = DeltaU`.

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To solve the question "For the process occurring at constant ....... `DeltaH = DeltaU`", we need to analyze the conditions under which the change in enthalpy (ΔH) is equal to the change in internal energy (ΔU). ### Step-by-Step Solution: 1. **Understanding the Definitions**: - **Internal Energy (ΔU)**: This is the total energy contained within a system, including kinetic and potential energy at the molecular level. - **Enthalpy (ΔH)**: This is a measure of the total heat content of a system, defined as ΔH = ΔU + PΔV, where P is the pressure and ΔV is the change in volume. ...
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Gibbs Helmholtz equation relates the enthalpy, entropy and free energy change of the process at constant pressure and temperature as DeltaG=DeltaH-TDeltaS " (at constant P, T)" In General the magnitude of DeltaH does not change much with the change in temperature but the terms TDeltaS changes appreciably. Hence in some process spontaneity is very much dependent on temperature and such processes are generally known as entropy driven process. Fro the reaction at 298 K, A_(2)B_(4)rarr2AB_(2) DeltaH=2" kJ" and DeltaS = 20 J/K at constant P and T, the reaction will be

Gibbs Helmholtz equation relates the enthalpy, entropy and free energy change of the process at constant pressure and temperature as DeltaG=DeltaH-TDeltaS " (at constant P, T)" In General the magnitude of DeltaH does not change much with the change in temperature but the terms TDeltaS changes appreciably. Hence in some process spontaneity is very much dependent on temperature and such processes are generally known as entropy driven process. When CaCO_(3) is heated to a high temperature it decomposes into CaO and CO_(2) , however it is quite stable at room temperature. It can be explained by the fact that

For which of the following reactions, DeltaH = DeltaU ?

Under which of the following condition is the relation DeltaH = DeltaU +P DeltaV valid for a closed system at

For a reaction involving condensed phases, DeltaH = DeltaU .

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ICSE-CHEMICAL THERMODYNAMICS -FILL IN THE BLANKS. TYPE QUESTIONS
  1. Thermodynamics mainly deals with

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  2. A closed system is that which

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  3. A system is said to be in ...... equilibrium when the system and the s...

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  4. When the work is done by the system, w is taken as ......

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  5. Is the entropy of the universe constant ?

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  6. Define isolated system.

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  7. The sum of ...... energy and ...... energy of a system is called entha...

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  8. For the process occurring at constant ....... DeltaH = DeltaU.

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  9. A spontaneous process is also called a ...... process.

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  10. Dissolution of sugar in water is accompanied by ...... of entropy of t...

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  11. A spontaneous process is an ...... process and occurs in ...... direct...

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  12. The force responsible for the spontaneity of a reaction is called .......

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  13. The total entropy change (DeltaS("total")) for the system and surround...

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  14. If DeltaS("total") is positive the process is ..... and occurs in the...

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  15. Whenever a spontaneous process takes place, it is accompanied by an in...

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  16. When DeltaG = 0, the process is …….

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  17. When DeltaH is ngative nad T DeltaS is positive, the process is ……..at...

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  18. The enthalpy change for a reaction does not depend upon the

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  19. The greater the free energy change, the greater is the amount of ........

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  20. At absolute zero, the entropy of a pure crystal is zero. This is

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