Which of the following best explains why liquid water is classified as amphoteric…
CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases
Problem
Which of the following best explains why liquid water is classified as amphoteric under the Brønsted–Lowry theory?
(a) Because pure water has a pH of 7, it is neutral and therefore acts as both an acid and a base.
(b) Water's high polarity allows it to stabilize ions in solution, so it can behave as both an acid and a base.
(c) A water molecule can donate a proton to another water molecule, forming OH− and H3O+.
(d) The two lone pairs on oxygen let water accept a proton while remaining neutral, which classifies it as amphoteric.