Substances are given: CaCO3, HNO3, Ca (OH) 2, H2O2, NH3 (solution), Na2S.
| April 25, 2021 | education
Substances are given: CaCO3, HNO3, Ca (OH) 2, H2O2, NH3 (solution), Na2S. Using water and the necessary substances only from this list, get calcium bicarbonate in two stages. Describe the signs of the reactions being performed. For the first reaction, write the abbreviated ionic equation.
1) CaCl2 + Na2CO3 = 2NaCl + CaCO3 (CaCO3 precipitate is formed);
2) CaCO3 + 2HNO3 = H2O + CO2 + Ca (NO3) 2 (colorless carbon dioxide is released).
Abbreviated ionic equation:
CaCl2 + Na2CO3 = 2NaCl + CaCO3;
Ca + 2Cl + 2Na + CO3 = 2Na + 2Cl + CaCO3;
Ca (+2) + CO3 (-2) = Ca (+2) CO3 (-2)
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