Chemistry Past Questions and Answers

The thermal decomposition of copper (ll)trioxonitrate (V) yields copper (ll) oxide, oxygen and?

Chlorine is produced commmercially by?

Aluminium is extracted commercially from its ore by?

Given the reactions (i) Fe<sub style='font-size: smaller;'>(s)</sub> + X(NO<sub style='font-size: smaller;'>3</sub>)<sub style='font-size: smaller;'>2(aq)</sub> → Fe(NO<sub style='font-size: smaller;'>3</sub>) + X<sub style='font-size: smaller;'>(s)</sub> (ii) H<sub style='font-size: smaller;'>2(g)</sub> + XO → X + H<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>(s)</sub>; X is likely to be?<br/>[/sub][/sub]

Crude copper can be purified by the electrolysis of CuSO<sub style='font-size: smaller;'>4(aq)</sub> if?