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Predict in the given question, entropy i...

Predict in the given question, entropy increases/ decreases
`2NaHCO_3(s) to Na_2CO_3(s) + CO_2(g) + H_2O(g)`

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Reactant is a solid. But among products there are one solid & two gases. Hence the products represents a condition of higher entropy.
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PATHFINDER-THERMODYNAMICS-QUESTION BANK
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