Question detail
If 15 g of solute is dissolved in 0.5 dm3 of solution, calculate the concentration in mol/dm3. (Mr of solute = 30 g/mol)
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
If 15 g of solute is dissolved in 0.5 dm3 of solution, calculate the concentration in mol/dm3. (Mr of solute = 30 g/mol)
Answer
1.0 mol/dm3
Explanation
This question tests the ability to calculate concentration from mass and volume, reinforcing the understanding of how to convert mass to moles and then to concentration.
Common mistake
Incorrect Unit Conversion
Students often forget to convert volume from cm3 to dm3 when calculating mass from concentration in mol/dm3.
Always convert cm3 to dm3 by dividing by 1000 before using it in calculations. Keep the correction anchored to Concentrations in mol/dm3 and titration calculations; check formula, substitution, calculation, final answer, and unit where relevant.
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