Question

S(s) +2CO(g)—->SO2(g)+2C(s)+76kJ

Is the reaction exothermic or endothermic based on the equation in the relative number of moles

Answer 1

exothermic

Step-by-step explanation:

The negative sign of the enthalpy change (-76 kJ/mol) indicates that the reaction is exothermic, which means that energy is being released from the reaction into the surroundings.

Your second interpretation is also correct. The enthalpy term of -76 kJ/mol represents the heat change per mole of reaction as written. In terms of masses, for the given amounts of reactants and products, a mass of 32 g of sulfur reacts with 56 g of carbon monoxide gas to produce 64 g of sulfur dioxide and 24 g of carbon.