When enthalpy and entropy change of a re...

When enthalpy and entropy change of a reaction are `-2.5 xx 10^(3)` cal and 7.4 cal respectively. Predict that the reaction at 298 K is

Spontaneous

Non spontaneous

Irreversible

Reversible

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a) Explain the effect of temperature on the spontaneity of a process based on Gibbs equation. b) For a reaction 2A(g)+B(g)rightarrow2D(g) , enthalpy and entropy changes are - 20.5 kJ mol^-1 and -50.4 J K^-1mol^-1 respectively. Predict whether the reaction occurs at 25^oC.

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Enthalpy and Entropy changes of two reactions are given below: Find out whether they are spontaneous or not at 27^oC . Justify. a) DeltaH = 26 kJ/mole, DeltaS = 8.3 J/K/mole b) DeltaH=-393.4 kJ/mole, DeltaS = 6 J/K/mole

.The air is a mixture of a number of gases. The major components are oxygen and.nitrogen with approximate proportion of '20 %' is to '79 %' by volume at '298 K'. The water is in equilibrium with air at a pressure of '10 ~atm'. At '298 K' if the Henry's law constants for oxygen and nitrogen at '298 K' are '3.30 xx 10^7 mm' and '6.51 xx' '10^7 mm' respectively, calculate the composition of these gases in water.

BRILLIANT PUBLICATION-THERMODYNAMICS AND CHEMICAL ENERGETICS - (LEVEL-II (HOMEWORK)

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