APFIVE Calculating Standard Entropy Change
Using the standard molar entropies in the table, what is the standard entropy change, $$\Delta S^\circ$$, in J/(mol*K) for the reaction shown below?
$$\ce{2 NO(g) + O2(g) -> 2 NO2(g)}$$
| Species | S° (J/mol*K) |
|---|---|
| NO(g) | 210 |
| O2(g) | 205 |
| NO2(g) | 240 |
A
$$-145$$
B
$$+200$$
C
$$-200$$
D
$$+145$$
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