ОХ241 Make molecular and ionic salts hydrolysis equatio

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241. Make molecular and ionic salts hydrolysis equation: KCN, K2S, CaS, Na2SiO3, CuSO4, ZnSO4, CrCl3, Mg (NO3) 2, Fe2 (SO4) 3, K2CO3, Fe (NO3) 3.