Question

The AH values for the reaction,
C(s) + 0,(g)
CO(g); AH = – 100 kJ
CO(g) + = 0,(0) —>CO,(C); AH = -200 kJ
The heat of reaction for C(s) + O2(g) → CO2(g) is​

Answer 1

Answer:

This reaction is known as sublimation of dry ice. ΔH is positive as it takes up energy when it sublimes.

Dry ice is more ordered arrangement as compared to carbon dioxide gas. So, disorder or randomness increases. Thus, ΔS is also positive.

Both ΔH and ΔS are positive.