You have two solutions of sodium chloride. One is a 2.00 M solution, the other is a 5.00 M solution. You have much more of the 5.00 M solution, and you add the solutions together. Which of the following could be the concentration of the final solution?
A) 4.80 M
B) 3.50 M
C) 2.90 M
D) 7.00 M
E) 7.20 M

Question

Quizplus · Accepted Answer

Since you have much more of the 5.00 M solution, the final concentration will be closer to 5.00 M than to 2.00 M. 4.80 M is a plausible concentration for the mixture.

You Have Two Solutions of Sodium Chloride