The reaction 2cu(s) + co2(g) → 2cuo(s) + c(s) is endothermic. which of the following statements is true?
a) the reaction is not spontaneous at any temperature.
b) the reaction is spontaneous at all temperatures.
c) it is impossible to determine if the reaction is spontaneous without calculations.
d) the reaction will be spontaneous only at low temperatures.
e) the reaction will be spontaneous only at high temperatures.

The correct answer is option E.

Explanation:

ΔG° = ΔH° - TΔS° (Gibbs's equation)

where :

ΔG° = Gibbs free energy of reaction at temperature T.

ΔH° = Enthalpy  of reaction at temperature T.

ΔS° = Entropy change of the reaction

for, endothermic ,ΔH° = positive

And for reaction to spontaneous ΔG° shluld negative,ΔG° = negative

ΔG°(negative)=ΔH°(positive) - T(High)ΔS°

So, for the reaction which are endothermic are spontaneous at high temperatures.

The given reaction is endothermic reaction.So, this reaction will be spontaneity at higher temperature

"a connection, a bond or common feeling between two people", or as a chemical process it stimulates love or sexual attraction

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).