Question detail
A solution contains 10 grams of sodium chloride (NaCl) dissolved in 0.5 dm3 of water. Calculate the concentration of the solution in g/dm3.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Use of amount of substance in relation to masses of pure substances
Question
A solution contains 10 grams of sodium chloride (NaCl) dissolved in 0.5 dm3 of water. Calculate the concentration of the solution in g/dm3.
Answer
20 g/dm3
Explanation
This question assesses the understanding of how to calculate concentration from mass and volume. The student must apply the concentration formula correctly to find the concentration of the solution.
Common mistake
Confusing Mole Concept
Students often think that one mole of different substances contains different numbers of particles.
Emphasize that one mole of any substance, regardless of its type, contains the same number of particles, which is defined by the Avogadro constant (6.02 x 10^23).
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