Answer to Question #329704 in Chemistry for grey tyrant

Question

Calculate the entropy change,  S° for the following reactions using tabulated standard entropy values and figure out if the resulting values obtained are consistent with the expected entropy change as predicted qualitatively.

Thermal decomposition of NaNO3

2 NaNO3(S)  ( 2 NaNO2(s) +  O2(g)

So values at 25°C:

NaNO3(S) = 116.5 J/mol-K

NaNO2(s) = 103.8 J/mol-K

O2(g)       = 205 J/mol-K

Answer 1

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