HClO4+K2Cr2O7\mathrm{HClO}_{4}+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}HClO4+K2Cr2O7
H2SO3+K2Cr2O7\mathrm{H}_{2} \mathrm{SO}_{3}+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}H2SO3+K2Cr2O7
HClO3+K2Cr2O7\mathrm{HClO}_{3}+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}HClO3+K2Cr2O7
H2SO4+K2Cr2O7\mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}H2SO4+K2Cr2O7