Question detail

Chemical changes case 049 acid-base-boundary. A student sorts acid, alkali and base statements. Which option keeps the terms distinct? Focus on neutralisation the reaction between acid and base alkali in Neutralisation of acids and salt production, not on a neighbouring Unit 4.4 reaction idea.

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

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At a glance

MCQ

Type

practice

Style

Topic

Reactions of acids

Question

A. Chemical changes case 049 acid-base-boundary: Keeps the acid-base distinction tied to the named substance for neutralisation the reaction between acid and base alkali
B. Chemical changes case 049 acid-base-boundary: Treats every base as an alkali without checking solubility (Neutralisation of acids and salt production)
C. Chemical changes case 049 acid-base-boundary: Uses pH wording but does not identify the acid-base role (neutralisation the reaction between acid and base alkali)
D. Chemical changes case 049 acid-base-boundary: Names a salt product without explaining the reaction context (Reactions of acids)

Answer

The correct option is Chemical changes case 049 acid-base-boundary: Keeps the acid-base distinction tied to the named substance for neutralisation the reaction between acid and base alkali.

Explanation

The correct option is Chemical changes case 049 acid-base-boundary: Keeps the acid-base distinction tied to the named substance for neutralisation the reaction between acid and base alkali. It is correct because it directly supports the approved learning objective to describe neutralisation as the reaction between an acid and a base or alkali in Neutralisation of acids and salt production. The other options are incorrect because they blur a Unit 4.4 concept boundary: acid versus alkali versus base, oxidation versus reduction, displacement versus reduction, electrolysis versus electroplating, anode versus cathode, positive versus negative ions, oxidation state versus ionic charge, or strong acid versus concentrated acid.

Common mistake

Confusing Neutralisation

Students often think that neutralisation only involves acids and bases, forgetting that it can also include acids reacting with alkalis.

Remember that neutralisation is the reaction between an acid and a base or alkali, and be sure to include both types in your explanations.

Related flashcards

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For Neutralisation of acids and salt production, which electrolysis focus answer best supports this Unit 4.4 objective: Describe neutralisation as the reaction between an acid and a base or alkali?