Question

Which one of the following is not applicable for a thermochemical equation?

• A. It tell about physical state of reactants and products
• B. It tells whether the reaction is spontaneous
• C. It tells whether the reaction is exothermic or endothermic
• D. It tells about the allotropic form (if any) of the reactants

Answer 1

Answer: (B)

It tells whether the reaction is spontaneous

A thermochemical equation tells us about the physical state of reactants and products as it is shown in the reaction. It also tells us about the reaction whether it is endothermic or exothermic from the heat in reactant or product. It also tells us about the allotropic form if any but it doesn't tells us about the spontaneity of a reaction. Spontaniety of a reaction is the measures of its randomness and can be calculated using formulations.