K2H4TeO6 + 3K[Sn(OH)3] + KOH + 2H2O → Te + 3K2[Sn(OH)6]
Potassium tetrahydroorthotellurate react with trihydroxostannate(II) potassium, potassium hydroxide and water to produce tellurium and potassium hexahydroxostannate(IV). Potassium hydroxide - concentrated, cold solution.