Question

What is the difference between a 10% (v/v) methanol (CH₄O) solution and a 10% (m/m) methanol solution? Drag the terms on the left to the appropriate blanks on the right to complete the sentence.

a) Volume fraction
b) Mass fraction
c) Density
d) Concentration

Answer 1

A 10% (v/v) methanol solution means that 10 mL of methanol is dissolved in 100 mL of solution, while a 10% (m/m) methanol solution means that 10 grams of methanol is dissolved in 100 grams of solution.

Step-by-step explanation:

A 10% (v/v) methanol solution, also known as a volume fraction, means that 10 mL of methanol is dissolved in 100 mL of solution. This is a measure of the volume of methanol relative to the volume of the entire solution.

On the other hand, a 10% (m/m) methanol solution, also known as a mass fraction, means that 10 grams of methanol is dissolved in 100 grams of solution. This is a measure of the mass of methanol relative to the mass of the entire solution.

So, in summary, the difference between the two is that one is a measure of volume (v/v) and the other is a measure of mass (m/m).