Q17 of 35 Page 42

Balance the chemical equation by including the physical states of the substances for the following reactions. (AS1)

Sodium hydroxide reacts with hydrochloric acid to produce sodium chloride and water.

NaOH + HCl → NaCl + H2O

Balanced equation: NaOH(aq) + HCl(aq)→ NaCl(aq) + H2O(l)


Explanation:


⇒Step 1: Write the given unbalanced equation


NaOH + HCl → NaCl + H2O


⇒Step 2: Compare the number of atoms of reactants with the number of atoms of products.



We find that the equation is already balanced.


⇒Step 3: Write down the balanced equation:


NaOH + HCl → NaCl + H2O


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