The correct answer to the question is: The total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water.
Chemical equation is backed up by the law of conservation of matter (mass) which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to the other.
Thus,
The total mass of reactants is equal to the total mass of products.
For example: let us consider the reaction between hydrogen and oxygen to produce water
2H₂ + O₂ —> 2H₂O
Reactant:
2H₂ = 2(2×1) = 2(2) = 4 g
O₂ = 2 × 16 = 32 g
Total mass = 4 + 32 = 36 g
Product:
2H₂O = 2[(2×1) + 16]
= 2[2 + 16]
= 2[18]
Total mass = 36 g
Thus,
Mass of reactant = mass of product
From the above illustration, we can conclude that the total mass of hydrochloric acid and sodium hydroxide will result in the same total mass of sodium chloride and water.
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