1 answer

Which of the following statements best describes the entropy change (∆S) during the reaction shown below?...

Question:

Which of the following statements best describes the entropy change (∆S) during the reaction shown below?

N2 (g) + 3 H2 (g) → 2 NH3 (g)

A. ∆S<0

B. ∆S=0

C. ∆S>0

D. sign of ∆S depends on the temperature at which the change takes place

E. there is no entropy change in this system


Answers

since this reaction involves gases only, total number of moles of products and reactants
determine whether entropy increased or decreased.
entropy increases , if total number of mols of product is more than that of reactant
entropy decreases, if product side has less number of moles than reactant part

so here in this reaction , number of moles of product is lesser than total number of
moles of reactants. Hence entropy decreases , Hence delta S < 0
Answer :

option A) delta S < 0
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thank you

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