Question

You have 25.00 mL of a 0.1000 M sugar solution. If you dilute this solution

to 0.01295 M, what is the final volume?

Answer 1

1. We find how much sugar is in 25 ml of a 0.1 mol solution. For this we use the following formula:

$n = V * C_M$

in the formula,

n — amount of substance (mol);

C_M — concentration of molarity (mol/l);

V — volume of solution (litres).

n = 0,1 * 0, 025 = 0,0025mol.

2. The dilute solution also contains 0.0025mol of sugar. From the above formula we derive the formula for finding volume(V): This formula $V= \cfrac n {C_M}$ is devided.

$V= \cfrac {0,0025} {0,01295} = 0,193$ litres = 193 ml

ANSWER: 193 ml