Two solutions of a substance (non electrolyte) are mixed in the following manner
Two solutions of a substance (non electrolyte) are mixed in the following manner:
480 ml of 1.5 M first solution + 520 mL of 1.2 M second solution
What is the molarity of the final mixture?
- 2.70 M
- 1.50 M
- 1.344 M
- 1.20 M
Answer
Total millimoles of solute = 480 × 1.5 + 520 × 1.2
= 720 + 624 = 1344
Total volume = 480 + 520 = 1000
Molarity of the final mixture = 1344/1000
= 1.344 M
The correct option is C.