Question

Which thermochemical process is shown by the following figure?

• A. Standard enthalpy of a reaction
• B. Born - Haber cycle of lattice enthalpy
• C. Hess?? law of constant heat summation
• D. Standard enthalpy of a solution

Answer 1

Answer: (C)

Hess?? law of constant heat summation

Answer 2

${X ->[\Delta H] Y}$ ${X ->[\Delta H_1] P}$ ${ ->[\Delta H_2] Q}$ ${ ->[\Delta H_3] Y}$ $\Delta H = \Delta H_1 + \Delta H_2 +\Delta H_3$