what is entropy change for reaction 2H2(g) + O2 (g) -----?2H2O(l). Standard entropies of H2(g) , O2(g) and H2O(l) are 126.6, 201.20,68.0 J/k mol respectively

Explanation

To calculate the entropy change (ΔS) for the reaction:

\[ 2H_2(g) + O_2(g) \rightarrow 2H_2O(l) \]

we will use the standard entropies of the substances involved in the reaction. The standard entropies provided are:

- \( S_{H_2(g)} = 126.6 \, \text{J/K·mol} \)
- \( S_{O_2(g)} = 201.20 \, \text{J/K·mol} \)
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