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?
- A. 5% w/v
- B. 5% v/v
- C. 50% w/v
- D. 50% w/v
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
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