Write balanced chemical equations for the following:
$(i)$ Carbon dioxide gas is passed through lime water.
$(ii)$ $NaOH$ solution is heated with zinc granules.
$(i)$ Carbon dioxide gas is passed through lime water.
$(ii)$ $NaOH$ solution is heated with zinc granules.
(N/A) $(i)$ $Ca(OH)_2(aq) + CO_2(g) \to CaCO_3(s) + H_2O(l)$
(Lime water turns milky due to the formation of insoluble calcium carbonate.)
$(ii)$ $2NaOH(aq) + Zn(s) \xrightarrow{\text{Heat}} Na_2ZnO_2(aq) + H_2(g)$
(Sodium zincate is formed along with the evolution of hydrogen gas.)
(Lime water turns milky due to the formation of insoluble calcium carbonate.)
$(ii)$ $2NaOH(aq) + Zn(s) \xrightarrow{\text{Heat}} Na_2ZnO_2(aq) + H_2(g)$
(Sodium zincate is formed along with the evolution of hydrogen gas.)
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