Question detail

What volume of solution is needed to dissolve 10 g of sodium chloride (NaCl) to achieve a concentration of 2 g/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

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

Question

A. 5 dm³
B. 2 dm³
C. 10 dm³
D. 1 dm³

Answer

5 dm³

Explanation

The volume can be calculated using the formula: volume = mass / concentration. Here, mass = 10 g and concentration = 2 g/dm³, so volume = 10 g / 2 g/dm³ = 5 dm³.

Common mistake

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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