1)KBr→Br2→HBr→NaBr→AgBr 2)Ca→Ca(OH)2→CaCO3→Ca(HCO3)2 Прошу помогите, заранее спасибо
1. 2KBr + Cl2 = 2KBr + Br2 2. Br2 + H2 = 2HBr 3. HBr + NaOH = NaOH + H2O 4. NaBr + AgNO3 = NaNO3 + AgBr⬇ 1. Са + 2H2O = Ca(OH)2⬇ + H2⬆ 2. Ca(OH)2 + CO2 = CaCO3⬇ + H2O 3. CaCO3 + H2CO3(CO2 + H2O) = Ca(HCO3)2