Question detail

Case 03 answer-sense. A student reviews the final answer. Which check best catches an exam error? Focus on titration data concentrations strong acids and alkalis in Concentrations in mol/dm3 and titration calculations, not on a neighbouring Unit 4.3 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

Using concentrations of solutions in mol/dm3 (chemistry only) (HT only)

Question

A. Case 03 answer-sense: Check that the answer size, unit, and chemical context all match for titration data concentrations strong acids and alkalis
B. Case 03 answer-sense: Accept the answer if it has many decimal places (Concentrations in mol/dm3 and titration calculations)
C. Case 03 answer-sense: Choose the answer with the biggest number because it looks more complete (titration data concentrations strong acids and alkalis)
D. Case 03 answer-sense: Drop the unit if the working contains a formula (Using concentrations of solutions in mol/dm3 (chemistry only) (HT only))

Answer

The correct option is Case 03 answer-sense: Check that the answer size, unit, and chemical context all match for titration data concentrations strong acids and alkalis.

Explanation

The correct option is Case 03 answer-sense: Check that the answer size, unit, and chemical context all match for titration data concentrations strong acids and alkalis. It supports the approved learning objective by keeping the method tied to titration data concentrations strong acids and alkalis in Concentrations in mol/dm3 and titration calculations. The other options are incorrect because they either use the wrong quantitative relationship, lose the required unit, confuse coefficients with subscripts, or report an answer without a complete worked method.

Common mistake

Misunderstanding Titration Calculations

Students often confuse the volumes of acid and alkali used in titrations, leading to incorrect concentration calculations.

Always ensure to use the correct volume for each solution in the titration and double-check the balanced equation to find the correct mole ratio.

Related flashcards

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For Concentrations in mol/dm3 and titration calculations, which option best supports this Unit 4.3 objective: (chemistry only) (HT only) Use titration data to determine concentrations of strong acids and alkalis. (AT 1, AT 3, AT 8)?