Calculate δs°for the combustion of ammonia.
4nh3(g) + 3o2(g) → 2n2(g) + 6h2o(l)
substance nh3(g) o2(g) n2(g) h2o(l)
s°(j/k·mol) 192 205.1 192 70
-135 j
-579 j
-387 j
579 j

The of the reaction is

Explanation:

Entropy change of the reaction is defined as the difference between the total entropy change of the products and the total entropy change of the reactants.

The equation representing entropy change of the reaction follows:

For the given chemical equation:

We are given:

Putting values in above equation, we get:

Hence, the of the reaction is

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