Question

(b)
What is the effect of dilution on (H30+/OH-) ratio ?​

Answer 1

Answer: When the solution of an acid is diluted then its strength decreases as there is decrease in the concentration of hydronium (H3O+)ions. Diluting with water of an acid causes lowering of concentration of hydronium ion because of adding H2O but there are no excess H+ to make it (H3O+).

Answer 2

Answer:

A decrease in the concentration of hydronium ions due to dilution makes the solution less acidic.

Explanation:

Acid:

• Acid is a chemical compound (molecule or ion) that has the ability to donate or accept protons.
• Cations that form when water is protonated are called hydronium ions.
• When a certain amount of acid is added to water, there is a certain amount of hydronium ions per unit volume of the solution.

The concentration of hydronium ions can be calculated as follows:

$concentration \: of \: hydronium \: ions = \frac{volume \: of \: acid}{volume \: of \: solution}$

• The concentration of hydronium ions decreases during dilution as a result of the reaction between the H+ ion of the acid and the OH- ion of water, resulting in the formation of H20 (water).
• Making the solution less acidic as the concentration of hydronium ions decreases.

Therefore, a decrease in the concentration of hydronium ions due to dilution makes the solution less acidic.

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