lithium-oxide-can-be-obtained-by-the-decomposition-of-lithium-peroxide-2-li2o2-s

Question

Lithium oxide can be obtained by the decomposition of lithium peroxide: 2 Li₂O₂(s) → 2 Li₂O(s) + O₂(g); ΔH°rxn = –561.5 kJ/mol

Calculate the energy (in kilocalories) released when 25.0 g lithium oxide is produced.

Accepted Answer

56.1 kcal is released.

Answer

24.2 kcal is released.

Answer

48.7 kcal is released.

Answer

60.5 kcal is released.

Lithium oxide can be obtained by the decomposition of lithium peroxide: 2 Li2O2(s) → 2 Li2O(s) + O2(g); ΔH°rxn = –561.5 kJ/molCalculate the energy (in kilocalories) released when 25.0 g lithium oxide is produced.