Cr2O7 2−+2OH−→2Cr2O4 2−+H2O\mathrm {Cr_2O_7^{~2-} + 2OH^- → 2Cr_2O_4^{~2-} + H_2O}Cr2O7 2−+2OH−→2Cr2O4 2−+H2O
Н2O2+KОН→KНО2+H2O\mathrm {Н_2O_2+KОН → KНО_2 + H_2O}Н2O2+KОН→KНО2+H2O
H2+O2→KO2\begin{array}{l}\mathrm{H}_{2}+\mathrm{O}_{2} \rightarrow \mathrm{KO}_{2}\end{array}H2+O2→KO2
Ca(HCO3)2→CaCO3+CO2+H2O\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2} \rightarrow \mathrm{CaCO}_{3}+\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}Ca(HCO3)2→CaCO3+CO2+H2O
