Пожалуйста помогите!

Question

Пожалуйста помогите!

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Answer 1

1. CaCO3=CaO+CO2
2. CaO+H2O=Ca(OH)2
3. Ca(OH)2+2HCl=CaCl2+2H2O
4. CaCl2+H2SO4=CaSO4+2HCl

Comments

1. 2Cu+O2=2CuO

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2. CuO+2HCl=CuCl2+H2O

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CuCl2+2NaOH=Cu(OH)2+2NaCl

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Cu(OH)2= CuO + H2O

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2CuO=2Cu+O2

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Cu+H2SO4=CuSO4+H2

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CuSO4+2NaOH=Cu(OH)2+Na2SO4