Carry out the transformation: Ca- Ca (OH) 2 – (OH) 2ZnO- Zn (OH) 2

1) Сa + 2H2O = Ca (OH) 2 + H2 ↑ (substitution reaction; calcium, water, calcium hydroxide)
2) CaO + H2O = Ca (OH) 2 ↓ (compound reaction; calcium oxide, water, calcium hydroxide)
3) 2Zn + O2 = 2ZnO (compound reaction; zinc, oxygen, zinc oxide)
4) ZnO + H2O = Zn (OH) 2 (compound reaction; zinc oxide, water, zinc hydroxide)



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