kek copper cycle moment
| Reactions | Observation |
|---|---|
| $Cu_{(s)} + 4HNO_{3(aq)} \rightarrow Cu(NO_3){2(aq)} \ +2NO{2(g)}+2H_2O_{(l)}$ | A colourless solution is added to an orange-red solid resulting in a clear light-blue/green(less water) solution. Brown effervescence occurs. |
| $Cu(NO_3){2(aq)} + 2NaOH{(aq)} \rightarrow Cu(OH){2(s)}+2NaNO{3(aq)}$ | A colourless solution is added a light blue solution to resulting in a colourless solution and a dark blue precipitate. |
| $Cu(OH){2(s)} \rightarrow (heat) \ CuO{(s)} + H_2O_{(l)}$ | A dark blue solid is heated up, resulting in a black solid and a colourless liquid. |
| $CuO_{(s)} + 2HCl_{(aq)} \rightarrow CuCl_{2(aq)} + H_2O_{(l)}$ | A colourless solution is added to a black solid resulting in a clear light blue solution. |
| $2Al_{(s)} + 3CuCl_{2(aq)} \rightarrow 2AlCl_{3(aq)}+ 3Cu_{(s)}$ | A silvery-white solid is added to a clear light blue solution resulting in a colourless solution and an orange-red solid. |
