1.

(i) What is entropy of a system?(ii) Define lattice enthalpy.(ii) For the reaction 2Ae) +B 2De), AH12.98 kJ/mol. &ASo=-44. 1 x 10.3 kJ mol-1 K-1 .Calculate ΔGo for the reactionand predict whether the reaction may occur spontaneously.

Answer»

Entropy is an extensive property of a thermodynamic system. The second law of thermodynamics states that the entropy of an isolated system never decreases. Such systems spontaneously evolve towards thermodynamic equilibrium, the state with maximum entropy.

The lattice energy of a crystalline solid is a measure of the energy released when ions are combined to make a compound. It is a measure of the cohesive forces that bind ions. Lattice energy is relevant to many practical properties including solubility, hardness, and volatility

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