Question

What is the volume (mL) of methanol used to make 355mL of a 32.0% V/v solution in water?

Answer 1

113.6 ml of methanol is used to make 355 ml of a 32.0
`\%` V/v solution in water.

Step-by-step explanation:

A 32
`\%` V/v solution of methanol contains 32 ml of methanol in 100 ml of solution. So, volume of methanol needed to make 355 mL of a 32
`\%` V/v solution is

`(32)/(100)=(x)/(355)`

On solving,

`\Rightarrow x= (32*355)/(100)`

`\therefore` x=113.6 ml

Answer 2

113.6 mL

Step-by-step explanation:

• A 32.0% V/v methanol solution means 32.0 mL of methanol in 100 mL of solution.
• Therefore, we can calculate the volume of methanol in 355 mL solution.

Since; 32.0% v/v methanol = 32 mL methanol in 100 mL of solution

We get an equation;

`(32mL)/(100mL) =(x)/(355mL)`

`x =((355)(32))/(100)`

`x=113.6mL`

Therefore, the volume of methanol in 355mL solution is 113.6mL