\(\left(1\right)CaO+H_2O\xrightarrow[]{}Ca\left(OH\right)_2\)
\(\left(2\right)Ca\left(OH\right)_2+CO_2\xrightarrow[]{}CaCO_3+H_2O\)
\(\left(3\right)CaCO_3\xrightarrow[]{t^\circ}CaO+CO_2\)
\(\left(4\right)CaO+CO_2\xrightarrow[]{}CaCO_3\)
\(\left(5\right)CaCO_3+2HCl\rightarrow CaCl_2+H_2O+CO_2\uparrow\)
\(\left(6\right)CaCl_2+2H_2O\xrightarrow[cmn]{đpdd}Ca\left(OH\right)_2+Cl_2\uparrow+2H_2\uparrow\)
\(\left(7\right)Ca\left(OH\right)_2+H_2SO_4\rightarrow CaSO_4+2H_2O\)
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