Chapter SH, Problem 22.6APP

To determine

To calculate: Change in the concentration of ${\text{H}}^{+}$ ions.

Answer to Problem 22.6APP

The concentration of ${\text{H}}^{+}$ ions increases $\underset{\_}{20\text{ times}}$ .

Explanation of Solution

Given:

Increase in concentration of ${\text{H}}^{+}$ ions on a decrease of 1 unit = $10\text{ times}$ .

Change in pH solution = $\text{6}\text{.5}$ to $\text{4}\text{.5}$ .

Calculation:

Change in pH solution = $\text{6}\text{.5}-4.5=2$

For a 1 unit decrease, the concentration of ${\text{H}}^{+}$ ions increases $10\text{ times}$ .

For a 2 unit decrease, the concentration if ${\text{H}}^{+}$ ions increase $10\times 2=20\text{ times}$

Conclusion:

The concentration of ${\text{H}}^{+}$ ions increases $\underset{\_}{20\text{ times}}$ .