A 10 % solution (50 ml) is diluted to a 2 % solution. What is the final volume?
Answer and explanation
Correct answer: B. 250 ml
- Step 1: C1 x V1 = C2 x V2. Step 2. V2 = 10 x 50 / 2 = 250 ml. Answer: 250 ml. Why not the others: 10 ml: the ratio of the concentrations was inverted. 58 ml: the quantities were added and subtracted. 200 ml: this is the volume of water added, not the final volume.
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