How to Calculate the Volume of 100% Ethanol Needed to Make a 60% Solution?

What is the formula to calculate the volume of 100% ethanol needed to make a 60% solution?

How do we determine the amount of 100% ethanol required to create a 900 ml 60% (v/v) ethanol solution?

Calculation of 100% Ethanol Volume for a 60% Solution

To calculate the volume in ml of 100% ethanol needed to make a 900 ml 60% (v/v) solution of ethanol in water, you will need to use the formula:

C1V1 = C2V2

Where C1 is the initial concentration of the solution (100%), V1 is the initial volume of the solution (unknown), C2 is the final concentration of the solution (60%), and V2 is the final volume of the solution (900 ml).

To solve for V1 (the volume of 100% ethanol needed), rearrange the formula as follows:

V1 = (C2V2) / C1

By substituting the values, you get:

V1 = (0.60 * 900) / 1.00

V1 = 540 ml

Therefore, you will need 540 ml of 100% ethanol to create a 900 ml 60% (v/v) solution of ethanol in water.