A solution is prepared by adding 25.0 mL of 1.30 M glucose solution to a flask, and then adding enough water to give a final volume of 200.0 mL. What is the molarity of the solution?
A)0.260 M
B)0.163 M
C)6.50 M
D)1.24 M

Question

Quizplus · Accepted Answer

Molarity (M) = moles of solute / liters of solution

First, we need to calculate the moles of glucose:

moles = Molarity x Volume (in liters)
moles = 1.30 M x 0.0250 L
moles = 0.0325 mol

Next, we need to calculate the new molarity of the solution:

Molarity = moles of solute / liters of solution

We know that the final volume is 200.0 mL, which is equal to 0.2000 L, so:

Molarity = 0.0325 mol / 0.2000 L
Molarity = 0.163 M

Therefore, the molarity of the solution is 0.163 M, which corresponds to choice B.

A Solution Is Prepared by Adding 25