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1 of 1 -Question 46 of 50Which of the following choices would have a negative entropy change?A, N2(g) + 3H2(g)-> 2NH3(g)Î B. Fe3O3(s) + 3C(s)-> 2Fe(s) + 3CO(g)C. CaCO3 (s)-> CaO(s) + CO2(g)O D. H20(s)- > H2O(U)Reset SelectionreviousNext |
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Answer» Entropy is the extend of disorder in a system. = In option A, Four moles of reactants give rise to two moles of products. This reduces the disorder in the system.= In option B, 4 moles or reactants give rise to 5 moles of products. Disorder of the system increases.= In option C, one mole of reactant gives rise to two moles of product. again disorder increases.=. In option D, reactants and products have same number of moles. No disorder in system.In option A, as disorder decreases, it shows negative entropy. |
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