Write the reaction equations: 1.Ca-CaO-Ca (OH) 2-Ca (NO3) 2 2.Ca-Ca (OH) 2-CaCl2
| September 5, 2021 | education
I.
1. Getting quicklime from simple substances. Food additive E529.
2Ca + O2 = 2CaO.
2. Slaking of lime. Food additive E526.
CaO + H2O = Ca (OH) 2.
3. Reaction of neutralization of nitric acid. Nitrogen fertilizer.
Ca (OH) 2 + 2HNO3 = Ca (NO3) 2 + 2H2O.
II.
1. Formation of calcium hydroxide – displacement of hydrogen.
Ca + 2H2O = Ca (OH) 2 + H2.
2. Reaction of alkali with hydrochloric acid. Food additive E509.
Ca (OH) 2 + 2HCl = CaCl2 + 2H2O.
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