$\rm a.C_6H_{12}O_6 \xrightarrow{} 2C_2H_5OH+2CO_2$

 $\rm CH_3COOH+C_2H_5OH \buildrel{{H_2SO_4đ,t^o}}\over\rightleftharpoons CH_3COOC_2H_5+H_2O$
$\rm 2CH_3COOC_2H_5+Ca(OH)_2 \xrightarrow{t^o}(CH_3COO)_2Ca+2C_2H_5OH$

 `-----`

$\rm b.$

$\rm a.C_6H_{12}O_6+Ag_2O \xrightarrow{NH_3} C_6H_{12}O_7+2Ag$

$\rm b.C_{12}H_{22}O_{11}+H_2O \xrightarrow{H^+,t^o} C_6H_{12}O_6+C_6H_{12}O_6$

$\rm c.(C_6H_{10}O_5)_n+nH_2O  \xrightarrow{H^+} nC_6H_{12}O_6$