Write the reaction equations Ca → CaO → Ca (OH) 2 → Ca (NO3) 2
| August 4, 2021 | education
At normal temperatures, calcium easily interacts with oxygen, forming calcium oxide:
2Ca + O2 = 2CaO
Ca (OH) 2 – calcium hydroxide, the trivial name for slaked lime, is obtained by “slaking”, i.e. interaction with water “quicklime” – calcium oxide CaO:
CaO + H2O = Ca (OH) 2
Ca (NO3) 2 – calcium nitrate is obtained by the action of nitric acid HNO3 on limestone CaCO3 or by the absorption of nitrous gases (mainly NO2) in milk of lime.
Ca (OH) 2 + CO2 = CaCO3 + H2O
CaCO3 + 2HNO3 = Ca (NO3) 2 + CO2 + H2O
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