[Pd(NH3)2Cl4] + 4NaOH
PdO2 + 2NH3 + 4NaCl + 2H2O
Tetrachloridodiamminepalladium(IV) react with sodium hydroxide to produce palladium(IV) oxide, ammonia, sodium chloride and water. Sodium hydroxide - diluted solution. The reaction takes place in a boiling solution.