C(graphite) + O2(g) → CO2(g) + 94.05 kcal C(diamond) + O2(g) → CO2(g) + 94.50 kcal What could you infer from the information giv

Question

____ [38]

3 years ago

9

C(graphite) + O2(g) → CO2(g) + 94.05 kcal C(diamond) + O2(g) → CO2(g) + 94.50 kcal What could you infer from the information giv

en above?

Chemistry

2 answers:

olga nikolaevna [1] · Answer 1 · 2022-02-13T00:34:57+03:00

Looking at both reactions, we can see that the combustion of carbon, graphite or diamond, leads to the formation of carbon dioxide and energy. Since energy is a product of the reaction, we known that this is an exothermic reaction. The value of the change in enthalpy, ΔH, will be negative.

A negative value of ΔH in each exothermic reaction suggests that the carbon dioxide product is at a lower energy than the reactants. And since more energy is released in the combustion of diamond compared to graphite, we know that diamond has a higher internal energy than graphite.

mr_godi [17] · Answer 2 · 2022-02-13T02:54:01+03:00

mr_godi [17]3 years ago

7 0

Answer: E 2 - E 1 is negative. and

Diamond has a higher enthalpy than graphite.