Question detail

In Concentrations in mol/dm3 and titration calculations, which option best answers variant 2 of this quantitative chemistry objective: (chemistry only) (HT only) State that concentration of a solution can be measured in mol/dm3?

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. quantitative relationship: (chemistry only) (HT only) State that concentration of a solution can be measured in mol/dm3
B. wrong formula: uses a different Unit 4.3 relationship from Concentrations in mol/dm3 and titration calculations
C. wrong unit: gives a value without checking the required unit
D. wrong reasoning: confuses coefficients, subscripts, mass, moles, or concentration

Answer

The correct option is quantitative relationship: (chemistry only) (HT only) State that concentration of a solution can be measured in mol/dm3.

Explanation

The correct option is quantitative relationship: (chemistry only) (HT only) State that concentration of a solution can be measured in mol/dm3. It is correct because it directly supports the approved learning objective to (chemistry only) (HT only) State that concentration of a solution can be measured in mol/dm3. This belongs to Concentrations in mol/dm3 and titration calculations within Using concentrations of solutions in mol/dm3 (chemistry only) (HT only), so the answer must use the named Unit 4.3 relationship and avoid mixing it with nearby ideas such as mass, moles, concentration, yield, atom economy, gas volume, coefficients, or subscripts.

Common mistake

Misunderstanding Concentration Units

Students often confuse mol/dm3 with g/dm3 when stating the concentration of a solution.

Remember that mol/dm3 measures the amount of substance in moles per cubic decimeter, while g/dm3 measures mass in grams per cubic decimeter. Focus on the definition of concentration in terms of moles. Keep the correction anchored to Concentrations in mol/dm3 and titration calculations; check formula, substitution, calculation, final answer, and unit where relevant.

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For Concentrations in mol/dm3 and titration calculations, which answer check answer best supports this Unit 4.3 objective: (chemistry only) (HT only) State that concentration of a solution can be measured in mol/dm3?