It is necessary to write the equations of chemical reactions corresponding to the following
| August 2, 2021 | education
It is necessary to write the equations of chemical reactions corresponding to the following transformations Ca → CaO → Ca (OH) 2
Ca → CaO → Ca (OH) 2.
1) 2Са + О2 = 2СаО – Reaction of the compound. (Redox reaction).
2Ca (0) + O2 (0) = 2Ca (2+) O (2-).
Ca -2e = Ca (2+) – Reducing agent (oxidation process).
O2 + 4e = 2O (2-) – Oxidant (Reduction process).
Find the smallest common multiple, which is divided by the number of electrons given and received = 4. 4 divided by the number of electrons donated by calcium = 2. 4 divided by the number of electrons taken up by oxygen = 0. Substitute the obtained coefficients into the equation.
2) CaO + H2O = Ca (OH) 2 – Compound reaction
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