Make up the reaction equations 1. C— CO2 — CaCO3 – CaCl2— Ca (OH) 2— CaCO3 2. S— H2S— SO2 — SO3— H2SO4— H2

univerkov | February 11, 2021 | education

Exercise 1
C + O2 => CO2;
CO2 + CaO => CaCO3;
CaCO3 + 2HCl => CaCl2 + CO2 + H2O;
CaCl2 + 2KOH => Ca (OH) 2 + 2KCl;
Ca (OH) 2 + K2CO3 => CaCO3 + 2KOH.

Assignment 2
S + H2 => H2S;
2H2S + 3O2 => 2SO2 + 2H2O;
2SO2 + O2 => 2SO3;
SO3 + H2O => H2SO4;
H2SO4 + Zn => ZnSO4 + H2.

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