What is the value for ∆soreaction for the following reaction, given the standard entropy values? 2 al (s) + 3cl2(g) 2alcl3(s)

-503 j/k

+503 j/k

-140 j/k

+140 j/k

-503 J/K

Explanation:

The balanced chemical reaction is,

The expression for enthalpy change is,

where,

n = number of moles

Now put all the given values in this expression, we get

Therefore, the entropy change for this reaction is, -503J/K

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