91Ó°ÊÓ

Are the following examples of body fluids acidic, basic, or neutral? a. saliva, \(\mathrm{pH} 6.8\) b. urine, \(\mathrm{pH} 5.9\) c. pancreatic juice, \(\mathrm{pH} 8.0\) d. bile, \(\mathrm{pH} 8.4\) e. blood, \(\mathrm{pH} 7.45\)

What are some similarities and differences between strong and weak acids?

One ingredient in some antacids is \(\mathrm{Mg}(\mathrm{OH})_{2}\). a. If the base is not very soluble in water, why is it considered a strong base? b. What is the neutralization reaction of \(\mathrm{Mg}(\mathrm{OH})_{2}\) with stomach acid, \(\mathrm{HCl}\) ?

Determine the \(\mathrm{pH}\) for the following solutions: a. \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=1.0 \times 10^{-8} \mathrm{M}\) b. \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=5.0 \times 10^{-2} \mathrm{M}\) c. \(\left[\mathrm{OH}^{-}\right]=3.5 \times 10^{-4} \mathrm{M}\) d. \(\left[\mathrm{OH}^{-}\right]=0.005 \mathrm{M}\)

Determine the \(\mathrm{pH}\) for the following solutions: a. \(\left[\mathrm{OH}^{-}\right]=1.0 \times 10^{-7} \mathrm{M}\) b. \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=4.2 \times 10^{-3} \mathrm{M}\) c. \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]=0.0001 \mathrm{M}\) d. \(\left[\mathrm{OH}^{-}\right]=8.5 \times 10^{-9} \mathrm{M}\)

What are the \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]\) and \(\left[\mathrm{OH}^{-}\right]\) for a solution with the following \(\mathrm{pH}\) values? a. \(3.0\) b. \(6.00\) c. \(8.0\) d. \(11.0\) e. \(9.20\)

Solution A has a pH of \(4.0\), and solution \(\mathrm{B}\) has a pH of \(6.0\). a. Which solution is more acidic? b. What is the \(\left[\mathrm{H}_{3} \mathrm{O}^{+}\right]\) in each? c. What is the \(\left[\mathrm{OH}^{-}\right]\) in each?