Question

Write the heat of formation reactions for the following compounds. Include the energy value and state whether the reaction is endothermic or exothermic.

1. FeO

1. KOH

1. NH4NO3

Answer 1

(i) For FeO.

standard enthalpy of formation will be: -271.96kJ

Since, enthalpy of formation is negative, reaction is exothermic.

(ii) For KOH,

standard enthalpy of formation will be: -430.24kJ

Since, enthalpy of formation is negative, reaction is exothermic.

(iii) For NH₄NO₃

standard enthalpy of formation will be: -367.5kJ

Since, enthalpy of formation is negative, reaction is exothermic.