Answer to Question #315625 in General Chemistry for John

Question

1.      Define heat

of formation/standard heat of formation ΔHfo.

2.      Discuss

standard state and give examples (Padolina et al., 1995).

3.      State that

values of standard states of formation are important because these are

conveniently used to calculate changes in enthalpy, ΔH of many 

     reactions.  

4.      Give

examples that illustrate the use of standard heats of formation in

calculating changes in enthalpy or ΔH of reactions.

DEADLINE : 03/25/2022

Answer 1

heat of formation, also called standard heat of formation, enthalpy of formation, or standard enthalpy of formation, the amount of heat absorbed or evolved when one mole of a compound is formed from its constituent elements, each substance being in its normal physical state (gas, liquid, or solid).