PHSC 18 MASTERING

What is the pH of an aqueous solution with [H3O+] = 2×10^−14 M ?

13.7

Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of H3O+ in a cola that has a pH of 4.240?

5.75×10−5 M

What are the Bønsted-Lowry definitions of acid and base?

An acid donates a hydrogen ion; a base accepts a hydrogen ion.

When a chemical loses a hydrogen ion, is it behaving as an acid or a base?

acid

An acid and a base react to form a salt, which consists of positive and negative ions. Which forms the positive ions: the acid or the base? Which forms the negative ions: the acid or the base?

base- acid

As the hydronium ion concentration of a solution increases, does the pH of the solution increase or decrease?

decreases

According to the Brønsted - Lowry definition, an acid _______.

donate hydrogen ions

Pure water is a neutral solution because it contains _______.

equal numbers of hydronium and hydroxide ions

When an acid dissolves in water, what ion does the water form?

hydronium ion