Question

Write the balanced chemical reaction:
\[\begin{array}{*{20}{l}}
  {1.\;4Na + O2 \to 2Na2O} \\
  \; \\
  {2.\;2H2O2 \to 2H2O + O2} \\
  \; \\
  {3.\;Mg\left( {OH} \right)2 + 2HCl \to MgCl2 + 2H2O} \\
  \; \\
  {4.\;4Fe + 3O2 \to 2Fe2O3} \\
  \; \\
  {5.\;2Al\left( {OH} \right)3 \to Al2O3 + 3H2O} \\
  \; \\
  {6.\;2NH3 + 3CuO \to 3Cu + N2 + 3H2O} \\
  \; \\
  {7.\;Al2\left( {SO4} \right)3 + 6NaOH \to 2Al\left( {OH} \right)3 + 3Na2SO4} \\
  \; \\
  {8.\;2HNO3 + Ca\left( {OH} \right)2 \to Ca\left( {NO3} \right)2 + 2H2O} \\
  \; \\
  {9.\;2NaOH + H2SO4 \to Na2SO4 + 2H2O}
\end{array}\]

Answer 1

Hint: The transformation of chemical substance into a new chemical substance by making and breaking of bonds between different atoms is known as Chemical Reaction. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Complete step by step answer:
\[\begin{array}{*{20}{l}}
  {1.\;4Na + O2 \to 2Na2O} \\
  \; \\
  {2.\;2H2O2 \to 2H2O + O2} \\
  \; \\
  {3.\;Mg\left( {OH} \right)2 + 2HCl \to MgCl2 + 2H2O} \\
  \; \\
  {4.\;4Fe + 3O2 \to 2Fe2O3} \\
  \; \\
  {5.\;2Al\left( {OH} \right)3 \to Al2O3 + 3H2O} \\
  \; \\
  {6.\;2NH3 + 3CuO \to 3Cu + N2 + 3H2O} \\
  \; \\
  {7.\;Al2\left( {SO4} \right)3 + 6NaOH \to 2Al\left( {OH} \right)3 + 3Na2SO4} \\
  \; \\
  {8.\;2HNO3 + Ca\left( {OH} \right)2 \to Ca\left( {NO3} \right)2 + 2H2O} \\
  \; \\
  {9.\;2NaOH + H2SO4 \to Na2SO4 + 2H2O}
\end{array}\]

Note: The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.