Make up the reaction equation: 1. CuSO4 – Cu (OH) 2 – CuO 2. FeCl3 – Fe (OH) 3 – Fe2 (SO4) 3

univerkov | September 20, 2021 | education

Make up the reaction equation: 1. CuSO4 – Cu (OH) 2 – CuO 2. FeCl3 – Fe (OH) 3 – Fe2 (SO4) 3 3. ZnCl2 – Zn (OH) 2 – ZnCl2

1. The reaction of exchange of sulfate with alkali.

CuSO4 + 2KOH = Cu (OH) 2 + K2SO4.

Decomposition of hydroxide at a temperature of 40-80 ° C.

Cu (OH) 2 = CuO + H2O.

2. Reaction of salt with alkali.

FeCl3 + 3NaOH = Fe (OH) 3 + 3H2SO4.

Reaction of hydroxide with alkali.

2Fe (OH) 3 + 3H2SO4 = Fe2 (SO4) 3 + 6H2O.

3. Zinc chloride and sodium hydroxide enter into an exchange reaction.

ZnCl2 + 2NaOH = Zn (OH) 2 + 2NaCl.

Reaction with hydrochloric acid.

Zn (OH) 2 + 2HCl = ZnCl2 + 2H2O.

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