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# Balanced equation for the reaction between aluminium oxide and sodium hydroxide solution is:A.${\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}} + {\rm{2NaOH}} \to {\rm{NaAl}}{{\rm{O}}_{\rm{2}}} + {{\rm{H}}_{\rm{2}}}{\rm{O}}$B.${\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}} + {\rm{2NaOH}} \to 2{\rm{NaAl}}{{\rm{O}}_{\rm{2}}} + {{\rm{H}}_{\rm{2}}}$C.${\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}} + {\rm{NaOH}} \to {\rm{NaAl}}{{\rm{O}}_{\rm{2}}} + {{\rm{H}}_{\rm{2}}}{\rm{O}}$D.${\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}} + {\rm{2NaOH}} \to 2{\rm{NaAl}}{{\rm{O}}_{\rm{2}}} + {{\rm{H}}_{\rm{2}}}{\rm{O}}$

Last updated date: 11th Sep 2024
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Hint: We know that chemical equations in which the number of atoms of all the involved species is equal on the reactant and the product side are called balanced chemical equations.

The aluminium oxide is specifically identified as aluminium (III) oxide with chemical formula ${\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}$and sodium oxide based on the formula NaOH. When these two react, sodium aluminate is formed along with water.
below.${\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}} + {\rm{NaOH}} \to {\rm{NaAl}}{{\rm{O}}_{\rm{2}}} + {{\rm{H}}_{\rm{2}}}{\rm{O}}$
${\rm{A}}{{\rm{l}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}} + {\rm{2NaOH}} \to 2{\rm{NaAl}}{{\rm{O}}_{\rm{2}}} + {{\rm{H}}_{\rm{2}}}{\rm{O}}$