Question detail

When an alkali is neutralised by an acid, what is the primary ion that reacts with hydroxide ions?

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

MCQ

Type

practice

Style

Topic

Reactions of acids

Question

Hydrogen ions

In the neutralisation reaction, hydrogen ions (H+) from the acid react with hydroxide ions (OH-) from the alkali to form water.

Misunderstanding pH Changes

Students often think that the pH decreases immediately when an alkali is added to an acid, without considering the neutralisation process.

Emphasize that pH decreases gradually as the alkali neutralises the acid, and explain the role of hydrogen ions reacting with hydroxide ions.

Flashcard 1 of 5

Press Space to flip, arrows to move