Which of the following substances will calcium hydroxide react with: CO2, CuO, HNO3, NaOH?

Ca (OH) 2 + CO2 = CaCO3 + H2O
Ca (OH) 2 + CuO = the reaction does not take place, since both substances are basic.
Ca (OH) 2 + 2HNO3 = Ca (NO3) 2 + 2H2O
Ca (OH) 2 + NaOH = does not go



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