Answer to Question #80866 in Physical Chemistry for lavanya

Question

the heat of neutralisation of lioh and hcl at 25*c is 34.868 kj/mol heat of ionisation of lioh will be

Answer 1

Solution. Regardless of the nature of the strong base and strong acid, the heat of neutralization of dilute solutions goes with the release of 55.9 kJ / mol of heat. I.e, ΔH2980=-55.9 kJ/mol. In our case, when lithium hydroxide was neutralized with hydrochloric acid, the order of 34.868 kJ/mol of heat. This decrease in the value of the released heat is due, precisely, to the ionization energy of the alkali-lithium hydroxide, then the ionization energy of the lithium hydroxide is: -55.9-(-34.868)=-21.032 kJ/mol.
Answer: -21.032 kJ/mol.