1)S-SO2-SO3-H2SO4-K2SO4
2)Cu-CuO-CuSo4-Cu(OH)2-CuO

1)

\[\mathrm{S+O_2\xrightarrow{t}SO_2}\]

\[\mathrm{2SO_2+O_2\xrightarrow{V_2O_5,\ t}2SO_3}\]

\[\mathrm{SO_3+H_2O\rightarrow H_2SO_4}\]

\[\mathrm{H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O}\]

2)

\[\mathrm{2Cu+O_2\xrightarrow{t}2CuO}\]

\[\mathrm{CuO+H_2SO_4\rightarrow CuSO_4+H_2O}\]

\[\mathrm{CuSO_4+2NaOH\rightarrow Cu(OH)_2\downarrow+Na_2SO_4}\]

\[\mathrm{Cu(OH)_2\xrightarrow{t}CuO+H_2O}\]

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