MHT CET Chemistry question

In a chemical reaction work is done by the system when

(A)number of moles of gaseous reactants is equal to the number of moles of gaseous products
(B)total number of moles increases
(C)number of moles of gaseous substances decreases
(D)number of moles of gaseous products is greater than the number of moles of gaseous reactantsCorrect

Answer: (D)

Solution

The system does work on the surroundings when it expands, i.e. when (more gaseous product moles than gaseous reactant moles); equal

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Question ID VK-064274