MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and ThermochemistryPrevious Year Questions

For the gas phase reaction, 5(g) 3(g) 2(g) PCl PCl Cl Which of the following conditions are correct? (2008)

A.H

B.H

C.H

D.H✓ Correct

Explanation

Gas phase reaction, 5(g) 3(g) 2(g) g PCl PCl Cl H E n RT g n = change in number of moles of products and reactants species. Since g n = +ve, hence H ve Also one mole of PCl₅ is dissociated into two moles of PCl₃ and Cl₂ in the same phase. Therefore, products reactants S S S S ve

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