Question

In the reaction of 1 mol of solid carbon with 2 mol of solid sulfur, the energy of the liquid carbon disulfide produced is 92 kJ higher than the energy of the reactants.Is the reaction exothermic or endothermic?Write the balanced chemical equation for the reaction, including the heat of reaction.Is the sign of dH positive or negative?

Answer 1

Answer;

The reaction is endothermic

Explanations:

The reaction between 1 mol of solid carbon with 2 mol of solid sulfur is given as:

`C(s)+2S(s)\rightarrow CS_2(l)\text{ }\triangle H=+92kJ`

Note that the change in enthalpy is positive since the energy of the product is 92kJ higher than the energy of the reactants. This shows that the enthalpy change of the reaction is greater than zero.

The reaction with a positive enthalpy change is an endothermic reaction showing that heat is absorbed from the surroundings during the reaction.