Question detail

What volume of solution is needed to dissolve 20 g of calcium chloride (CaCl₂) to achieve a concentration of 5 g/dm³?

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

At a glance

MCQ

Type

practice

Style

Topic

Use of amount of substance in relation to masses of pure substances

Question

4 dm³

Using the formula: volume = mass / concentration. Here, mass = 20 g and concentration = 5 g/dm³, so volume = 20 g / 5 g/dm³ = 4 dm³.

Common Mistake in Volume Calculation

Students often forget to convert the volume from cm³ to dm³ when calculating the volume of a solution from mass and concentration.

Always convert cm³ to dm³ by dividing by 1000 before using the concentration formula.

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