Question

Solid magnesium hydroxide decomposes into solid magnesium oxide and gaseous water . Write a balanced chemical equation for this reaction

Answer 1

Answer: $Mg(OH)_2(s)\rioghtarrow MgO(s)+H_2O(g)$

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

The balanced equation for decomposition of solid magnesium hydroxide decomposes into solid magnesium oxide and gaseous water is:

$Mg(OH)_2(s)\rioghtarrow MgO(s)+H_2O(g)$

(s) represents solid state and (g) represents gaseous state.

Answer 2

Equation: MgOH2 (s) --> MgO (s) + H2O (g)

And it's already balanced.

I had chemistry this semester too.