Question

C12H22O11--->C6H12O6--->CO2; C6H12O6--->C2H5OH

Answer 1

$C_{12}H_{22}O_{11}--->C_6H_{12}O_6--->CO_2\\1)C_{12}H_{22}O_{11}+H_2O=C_6H_{12}O_6+C_6H_{12}O_6\\2)C_6H_{12}O_6=2C_2H_5OH+2CO_2$

$C_6H_{12}O_6--->C_2H_5OH\\C_6H_{12}O_6=2C_2H_5OH+2CO_2$