Question

You have four solutions A, B, C, and D. the pH of solution A is 6, B is 9, C is 12 and D is 7. Identify the most acidic and most basic solution.

Answer 1

Given data:

1. The pH of solution A is 6.
2. The pH of solution B is 9.
3. The pH of solution C is 12.
4. The pH of solution D is 7.

As we know that;

1. The pH scale represents the nature of the solution.
2. It is calculated by the formula $\mathrm{pH}=-\log \left[{\mathrm{H}}_3{\mathrm{O}}^{+}\right]$, where $\left[{\mathrm{H}}_3{\mathrm{O}}^{+}\right]$ is the concentration of hydronium ions$\left({\mathrm{H}}_3{\mathrm{O}}^{+}\right)$.
3. For acidic solutions, the pH value is less than 7.
4. For basic solutions, the pH value is more than 7.
5. And for neutral solutions, pH is equal to 7.

By the pH scale, we can conclude that solution A is the most acidic solution while solution C is the most basic solution.