Question

Choose the correct statements from the options given below.

• A. Concentrated acid has less concentration of water than that of a diluted acid
• B. Concentrated acid has more ${\text{H}}^{+}\text{(aq)}$ ions than that of a diluted acid.
• C. Concentrated acid is more acidic than the diluted acid.
• D. Concentrated acid is less acidic than the diluted acid.

Answer 1

Answer: (A), (B), (C)

The correct options are
A Concentrated acid has less concentration of water than that of a diluted acid
B Concentrated acid has more ${\text{H}}^{+}\text{(aq)}$ ions than that of a diluted acid.
C Concentrated acid is more acidic than the diluted acid.

Dilution is the process of mixing an acid or a base with water. Diluting an acid results in decrease in the concentration of ${\text{H}}^{+}\text{(aq)}$ ions per unit volume. More the hydrogen ion concentration, more is the acidic nature of the acid.

Concentrated acid produces more ${\text{H}}^{+}\text{(aq)}$ ions compared to diluted acid in aqueous solution. Therefore, concentrated acid is more acidic than diluted acid.

Also, for a given volume of concentrated and diluted acid, the quantity of water is lesser in concentrated acid compared to diluted acid. Therefore, concentration of water is lesser in concentrated acid than that of a diluted acid.