Please help!! Chemistry homework!!?

Posted on 2015-09-18 06:34:00 in Chemistry by TOM

Given the values of ?H?rxn, ?S?rxn, and T below, determine ?Suniv.

A) ?H?rxn= 90 kJ , ?Srxn= 146 J/K , T= 294 K
Express your answer using two significant figures.

B) ?H?rxn= 90 kJ , ?Srxn= 146 J/K , T= 763 K
Express your answer using one significant figure.

C) ?H?rxn= 90 kJ , ?Srxn=? 146 J/K , T= 294 K
Express your answer using two significant figures.

D) ?H?rxn=? 90 kJ , ?Srxn= 146 J/K , T= 399 K
Express your answer using two significant figures.

E) Predict whether or not the reaction in part A will be spontaneous.

spontaneous or nonspontaneous

F) Predict whether or not the reaction in part B will be spontaneous.

spontaneous or nonspontaneous

G) Predict whether or not the reaction in part C will be spontaneous

spontaneous or nonspontaneous

H) Predict whether or not the reaction in part D will be spontaneous

spontaneous or nonspontaneous

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