I\'m getting all mixed up and backwards on a homework problem.. The exact proble

Question

I'm getting all mixed up and backwards on a homework problem.. The exact problem is:

Comment on the following statement: Exothermic reactions are spontaneous, but endothermic reactions are nonspontaneous.

Check all that apply.

Check all that apply.

Endothermic reactions can become spontaneous at low temperatures if ?S is positive. Exothermic reactions can become nonspontaneous at low temperatures if ?S is negative. Exothermic reactions can become nonspontaneous at low temperatures if ?S is positive. Exothermic reactions can become nonspontaneous at high temperatures if ?S is negative. Endothermic reactions can become spontaneous at low temperatures if ?S is negative. Exothermic reactions can become nonspontaneous at high temperatures if ?S is positive. Endothermic reactions can become spontaneous at high temperatures if ?S is positive. Endothermic reactions can become spontaneous at high temperatures if ?S is negative

Explanation / Answer

If exothermic delta H < 0; and if endothermic delta H >0

by analysing 4,7 are correct

others are incorrect

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