91Ó°ÊÓ

Olivia noticed that the \(\mathrm{pH}\) of her garden soil decreased after it rained. Did her garden soil become more acidic or less acidic?

Jake noticed that swimming pool water tends to increase in \(\mathrm{pH}\) more quickly during hot weather. Does pool water tend to become more acidic or more basic during hot weather?

If one solution has an \(\mathrm{H}_{3} \mathrm{O}^{+}\)concentration that is 10 times that of another solution, what is the difference in their \(\mathrm{pH}\) values?

If solution \(\mathrm{A}\) has a \(\mathrm{pH}\) that is three \(\mathrm{pH}\) units greater than that of solution B, how much greater is the \(\mathrm{H}_{3} \mathrm{O}^{+}\) concentration in solution B than in solution A?

Why does the \(\mathrm{pH}\) scale typically range from \(\mathrm{pH} 0\) to \(\mathrm{pH}\) 14 ?

Can a solution have a pH less than 0 or greater than 14 ? Explain.

Can the \(\mathrm{pH}\) of an acid solution be greater than 7 ?

What is the \(\mathrm{pH}\) range for acidic solutions? For basic solutions?

What is the \(\mathrm{pH}\) of solutions having the following \(\mathrm{H}_{3} \mathrm{O}^{+}\) concentrations? Identify each as acidic, basic, or neutral. (a) \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=1.0 \times 10^{-3} \mathrm{M}\) (b) \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=1.0 \times 10^{-13} \mathrm{M}\) (c) \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=3.4 \times 10^{-10} \mathrm{M}\)

What is the \(\mathrm{pH}\) of solutions having the following \(\mathrm{H}_{3} \mathrm{O}^{+}\) concentrations? Identify each as acidic, basic, or neutral. (a) \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=1.0 \times 10^{-9} \mathrm{M}\) (b) \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=1.0 \times 10^{-14} M\) (c) \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=7.2 \times 10^{-3} \mathrm{M}\)