Question detail
How many grams of solute are needed to make 2 dm³ of a solution with a concentration of 0.5 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
- A. 1 g
- B. 2 g
- C. 3 g
- D. 4 g
Answer
1 g
Explanation
The mass of solute can be calculated using the formula: mass = concentration × volume. Here, mass = 0.5 g/dm³ × 2 dm³ = 1 g.
Common mistake
Common Mistake in Rearranging Concentration Equation
Students often confuse the relationship between mass, volume, and concentration, leading to incorrect rearrangements of the equation.
To correctly rearrange the equation, remember that concentration (c) is calculated as mass (m) divided by volume (V). Thus, to find mass, rearrange to m = c × V, and for volume, rearrange to V = m / c. Keep the correction anchored to Concentration of solutions; check formula, substitution, calculation, final answer, and unit where relevant.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.