In the given schemes of chemical reactions, arrange the coefficients and indicate what type each
| June 18, 2021 | education
In the given schemes of chemical reactions, arrange the coefficients and indicate what type each of them belongs to: a) No + O2 = NO2 b) PbCl2 + Zn = ZnCl2 + Pb c) Na2Co3 + HCl = NaCl + Co2 + H2O d) Cu (NO3) 2 = CuO + NO2 + H2O
a) 2NO + O2 = 2NO2, compound reaction;
b) PbCl2 + Zn = ZnCl2 + Pb, substitution reaction: more active zinc replaces lead in chloride;
c) Na2CO3 + 2HCl = 2NaCl + CO2 ↑ + H2O, ion exchange reaction;
d) 2Cu (NO3) 2 = 2CuO + 4NO2 ↑ + O2 ↑, decomposition reaction.
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