Question

Define following : a) Enthalpy of reaction, b) Enthalpy of formation, c) Enthalpy of combustion

Answer 1

Answer:

Enthalpy of Formation: it is a form of standard enthalpy of reaction in which one mole of a compound is formed from its elements. the standard enthalpy change for the formation of one mole of a compound from its elements. the standard enthalpy change for the formation of a one-mole compound from its elements in their most stable states of aggregation is called standard molar enthalpy of formation. it is symbol is ΔH 0

N 2(g) +O 2(g) →1NO (l),Δ f H 0=+180kJ