Practice calculating pH from [H+] and vice versa.
What is the pH of stomach acid which has a hydrogen ion concentration of 0.0125 M?
pH = (to one decimal place)
Milk of magnesia has a hydrogen ion concentration of 3 x 10-10 M.
Its pH is (to one decimal place)
Fresh milk has a hydrogen ion concentration of 4 x 10-7 M.
What is its pH (to one decimal place)?
Rainfall in Wisconsin varies from a pH of 4.4 in southeastern Wisconsin to nearly 5.0 in northwestern Wisconsin. This difference in pH of 0.6 units corresponds to what difference in hydrogen ion concentration?
The hydrogen ion concentration corresponding to pH 4.4 = μM (2 significant figures)the hydrogen ion concentration corresponding to pH 5.0 = μM (2 significant figures). The difference between these concentrations is μM. The concentration of hydrogen ions is times larger at pH 4.4 than pH 5.0.
Anaesthetists have to ensure that a patient is breathing at an appropriate rate since the removal of CO2 from the blood is essential in maintaining blood pH within the normal range. In an experiment, an acute change in ventilation caused a drop in blood pH from 7.40 to 7.34. What was the corresponding difference in the concentration of hydrogen ions?
pH 7.4 corresponds to [H+] = nM (to one decimal place) pH 7.34 corresponds to [H+] = nM (to one decimal place) difference in [H+] = nM (to one decimal place)
Calculate the pH of a 0.01 M solution of calcium hydroxide. Assume that calcium hydroxide dissociates completely. Remember that [H+] x [OH-] = 10-14 M2
Calculate the pH of a solution of HCl prepared by diluting 5 ml of 1 M HCl into a total volume of 1 L.
pH of resulting solution =
What volume of 1 M HCl would be required to decrease the pH of one litre of a 10-3 M HCl solution by one pH unit? (Ignore the small change in volume)
The volume of 1 M HCl required would be ml.
Module 4: Practice Questions on logs and exponential equations