Suppose compound A(s) decomposes to substances B(D and C( at moderately high tem

Question

Suppose compound A(s) decomposes to substances B(D and C( at moderately high temperatures. How would running the decomposition reaction at even higher temperatures (above melting point of A, but still below the boiling points of A and C) affect the value of ASTxn? O ASron will be negative, but greater in magnitude than when A(s) decomposes O ASron will be positive, but smaller in magnitude than when A(s) decomposes O ASxn will be negative, but smaller in magnitude than when A(s) decomposes. O There will be no difference in AS O ASxn will be positive, but greater in magnitude than when A(s) decomposes.

Explanation / Answer

The delta S rxn will be positive but smaller in magnitude than A(s) decomposes. Option b is correct

The entropy of A will increase when it is in liquid form i.e above its melting temperature. So the change in entropy will decrease. since change in entropy is calculated as entropy of products minus entropy of reactants.

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