Write down the reaction equations 1) Calcium carbonate⇒ Calcium oxide + carbon dioxide
| June 11, 2021 | education
Write down the reaction equations 1) Calcium carbonate⇒ Calcium oxide + carbon dioxide 2) Copper sulfate + sodium hydroxide⇒ 3) Hydrochloric acid + iron⇒ 4) Lithium oxide + water⇒Lithium hydroxide
1) CaCO3 → CaO + CO2 ↑ (decomposition reaction, occurs when heated);
2) CuSO4 + 2NaOH → Cu (OH) 2 ↓ + Na2SO4 (exchange reaction, precipitate falls);
3) 2HCl + Fe → FeCl2 + H2 ↑ (substitution reaction, hydrogen is evolved);
4) Li2O + H2O → 2LiOH (compound reaction).
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