Question detail
A solution contains 5 g of sodium chloride (NaCl) dissolved in 250 cm3 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
Using concentrations of solutions in mol/dm3 (chemistry only) (HT only)
Question
A solution contains 5 g of sodium chloride (NaCl) dissolved in 250 cm3 of water. Calculate the concentration of the solution in g/dm3.
Answer
20 g/dm3
Explanation
This answer is strong because it demonstrates the ability to convert mass and volume into concentration using the correct formula. The question tests the understanding of how to calculate concentration from mass and volume.
Common mistake
Misunderstanding Ratios in Titration Calculations
Students often confuse the ratios of reactants in titration calculations, leading to incorrect concentration results.
To fix this, carefully identify the coefficients from the balanced equation and apply them correctly to the mole ratios when calculating concentrations.
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