Question detail

Chemical changes case 051 reactivity-evidence. A student uses the reactivity series to justify an observation. Which option is best? 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 051 reactivity-evidence: Uses the relative reactivity order to predict the change for neutralisation the reaction between acid and base alkali
B. Chemical changes case 051 reactivity-evidence: Chooses the product by memorising a colour instead of the series (Neutralisation of acids and salt production)
C. Chemical changes case 051 reactivity-evidence: Says any metal can displace any other metal ion (neutralisation the reaction between acid and base alkali)
D. Chemical changes case 051 reactivity-evidence: Ignores whether the reacting substance is more or less reactive (Reactions of acids)

Answer

The correct option is Chemical changes case 051 reactivity-evidence: Uses the relative reactivity order to predict the change for neutralisation the reaction between acid and base alkali.

Explanation

The correct option is Chemical changes case 051 reactivity-evidence: Uses the relative reactivity order to predict the change 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?