LITHIUM PEROXIDE Li2O2White, when heated decomposes without melting. Fully hydrolyzed by water, reacts with acids. Vigorously absorbs CO2 from the air. Obtaining Lithium peroxide Li2O2: 2 LiOH + H2O + 2 H2O2 (hot) = Li2O2-H2O2-3H2O↓ (in ethanol), Li2O2-H2O2-3H2O = Li2O2 + H2O2 + 3 H2O (over P4O10, vacuum). Reactions with lithium peroxide Li2O2: 2 Li2O2 = 2Li2O + O2 (200—400° C). Li2O2-H2O = Li2O2 + H2O (t> 0° C). Li2O2 + 2 H2O (cold) = 2 LiOH + H2O2 2 Li2O2 + 2 H2O (hot) = 4 LiOH + O2↑. Li2O2 + 2 HCl (dilute, cold) = 2 LiCl + H2O2, 2 Li2O2 + 2 H2SO4 (dilute,hot.) = 2Li2SO4 + 2H2O + O2↑. 2 Li2O2 + 2 CO2 = 2 Li2CO3 + O2 (t>200° C), Li2O2 + CO = Li2CO3 (40—70° C). |
Did you know?
Natural gas has no odour. The smell is added artificially so that leaks can be detected.