Question detail

What is the concentration in mol/dm3 of a solution containing 0.25 moles of solute in 0.5 dm3 of solution?

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At a glance

MCQ

Type

practice

Style

Topic

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

Question

  1. A. 0.5 mol/dm3
  2. B. 0.75 mol/dm3
  3. C. 1.0 mol/dm3
  4. D. 1.5 mol/dm3

Answer

0.5 mol/dm3

Explanation

Concentration can be calculated using the formula: concentration = moles / volume. Here, concentration = 0.25 moles / 0.5 dm3 = 0.5 mol/dm3.

Common mistake

Common Mistake in Moles Calculation

Students often forget to convert the volume from cm3 to dm3 when calculating moles from concentration.

Always convert the volume to dm3 by dividing cm3 value by 1000 before using it in the calculation.

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