Question

I need a 70% solution of ethan law i want to make a 500 ml solution using absolute ethanol how much ethanol will i need to make the 500 mill solution.

Answer 1

To make a 500 mL solution with a 70% ethanol concentration, you need 350 mL of absolute ethanol and 150 mL of water.

Step-by-step explanation:

To create a 500 mL solution with a 70% concentration of ethanol (C₂H₅OH), you need to calculate the volume of absolute ethanol that would result in such a concentration. The calculation is straightforward:

• Volume of solution required = 500 mL
• Desired concentration of solution = 70%

Therefore, you need 70% of the 500 mL to be ethanol which is:

• 0.70 x 500 mL = 350 mL of ethanol

So, to make a 500 mL solution that is 70% ethanol, you would need 350 mL of absolute ethanol and the remaining 150 mL would be water to make up the total volume to 500 mL.