Preparation of Hydrogen Gas

Complete the following equation.

Water acidified with sulphuric acid $\left({\mathrm{H}}_2\mathrm{O}\right)$$\underset{\mathrm{Electrolysis}}{\to }{\mathrm{O}}_2+\_\_\_\_\_.$$$

Complete and balance the following equation.

$\mathrm{LiH}+{\mathrm{H}}_2\mathrm{O}\to \mathrm{LiOH}+\mathrm{\_\_\_\_\_}.$

Complete the following equation.

${\mathrm{CaH}}_2+2{\mathrm{H}}_2\mathrm{O}\to \mathrm{Ca}{\left(\mathrm{OH}\right)}_2+\mathrm{\_\_\_\_\_}.$

Complete and balance the following equation.

Red hot $\mathrm{Fe}+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{steam}\right)\to {\mathrm{Fe}}_3{\mathrm{O}}_4+\mathrm{\_\_\_\_\_}.$

Complete and balance the following equation.

$\underset{\mathrm{Powder}}{\mathrm{Al}}+\underset{\mathrm{Boiling} \mathrm{water}}{{\mathrm{H}}_2\mathrm{O}}\to \mathrm{Al}{\left(\mathrm{OH}\right)}_3+\mathrm{\_\_\_\_\_}.$

Complete and balance the following equation.

$\mathrm{Mg}+\underset{\mathrm{Boiling} \mathrm{water}}{{\mathrm{H}}_2\mathrm{O}}\to \mathrm{Mg}{\left(\mathrm{OH}\right)}_2+\mathrm{\_\_\_\_\_}.$

Complete and balance the following equation.

$\mathrm{Ca}+\underset{\mathrm{Cold} \mathrm{water}}{{\mathrm{H}}_2\mathrm{O}}\to \mathrm{Ca}{\left(\mathrm{OH}\right)}_2+\mathrm{\_\_\_\_\_}.$

Complete and balance the following equation.

$\mathrm{Al}+\underset{\mathrm{Dilute}}{\mathrm{HCl}}\to {\mathrm{AlCl}}_3+\mathrm{\_\_\_\_\_}.$

Complete and balance the following equation.

$\mathrm{Mg}+\underset{\mathrm{Dilute}}{\mathrm{HCl}}\to {\mathrm{MgCl}}_2+\mathrm{\_\_\_\_\_}.$