Chapter 16 Dilutions and concentration (TECH) Q&A (1 OF 11) Sample Questions

1. If 500 mL of a 15% v/v solution is diluted to 1,500 mL, what is the resultant percentage strength?
  1. A. 5% w/v
  2. B. 5% v/v
  3. C. 50% w/v
  4. D. 50% w/v
Answer
Ans: D
Solution:
C1* V1= C2 * V2
500 (mL) x 15 (%) = 1,500 (mL) x? (%)
1,500 x = 7,500
x = 7,500 / 1,500
x = 5% v/v