A household cleaning solution at is tested and found to have a pOH of
CHEMISTRY · Multi-part · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A household cleaning solution at 25∘C is tested and found to have a pOH of 4.60. Treat the cleaner as a dilute aqueous solution in which all hydroxide ions come from a strong base.
(a) Calculate the molar concentration of hydroxide ions, [OH−], in the cleaner. Express your answer in scientific notation with appropriate units and significant figures.
(b) Determine the pH of the solution and the corresponding hydronium-ion concentration.
(c) Convert the hydroxide-ion concentration obtained in part (a) to a mass concentration (grams of NaOH per liter) that would give the same [OH−], assuming the base present is sodium hydroxide. Report your answer to the correct number of significant figures.