Question

Account for the following: An aqueous solution has a $\mathrm{pH}$ value of $7.0$. Is this solution acidic, basic or neutral?

Answer 1

$\mathrm{pH}$:

• $\mathrm{pH}$ is basically defined as the negative logarithm of the${\mathrm{H}}^{+}$ion concentration, in an aqueous solution, which can be shown as:

$\mathrm{pH}=-\log \left[{\mathrm{H}}^{+}\right]$

• A $\mathrm{pH}$ scale is generally used as a tool for measuring the strength of the acids and bases, in which the scale ranges from $0-14.$
• The aqueous solution having a $\mathrm{pH}$ value ranging between $0-7$ is known to be acidic in nature, whereas it will be basic if the value will range between$7-14.$
• However, for the $\mathrm{pH}$ value equal to $7$, the aqueous solution is denoted as neutral in nature.

An aqueous solution having a $\mathrm{pH}$ value of $7.0$:

• As the aqueous solution given has a $\mathrm{pH}$ value of $7.0$, hence the solution will be neutral in nature.
• As we have already discussed above, that the aqueous solution having the $\mathrm{pH}$ value equal to $7$, are generally neutral.

Thus, the solution given will be neutral.