How many mL of water must be added to 300 mL of 70% alcohol solution to make a 40% alcohol solution?

How many mL of water must be added to 300 mL of 70% alcohol solution to make a 40% alcohol solution?

Thus, you would add 225 mL of water to 300 mL of 70 % alcohol, and you would get 525 mL of 40 % alcohol.

How do you make 90 alcohol?

take 785 ml of 90% v/v ethanol, or 730 ml of 95% v/v ethanol, or 707 ml of 99% v/v ethanol; add distilled or filtered water to make up a volume of 1 litre; leave to cool and top up with water again to bring the volume back to 1 litre (mixing water and ethanol together produces a reaction whereby volume is reduced).

How do you make 91 alcohol to 70?

Step 1 – In a clean spray bottle, combine the 91% isopropyl alcohol with water. Mix well by shaking gently. Step 2 – Store the combined alcohol solution in a spray bottle for convenient measured dispensing. Store bottle away from sources of heat, spark, or direct sunlight.

How do you make 75 ethanol?

The amount of alcohol has not changed. You have 1000 ml (1 liter) of 75% alcohol which is a mixture of pure alcohol with water. This means that you have 75% of pure alcohol and 25% of water: 0.75 x 1000 = 750 ml.

How much quantity of water must be added to 48 mL of alcohol?

hence, 144 ml of water shoule be added.

How do you make 70% alcohol out of 100 alcohol?

Add 350 mL of 100 percent isopropyl alcohol to a 500 mL graduated cylinder. Ensure that the measurement is read at eye level with the meniscus, the bottom of the curved liquid, at 350 mL. Add an additional 150 mL of water to the graduated cylinder for a total volume of 500 mL, again measured at eye level.

Can you make 91 isopropyl alcohol?

Take 10mL of your 99% IPA and add 0.98 mL water to get a final concentration of 91% IPA! To make the problem even easier, you can take approximately 10 parts IPA and mix in 1 part water.

How do you make isopropyl alcohol out of 70?


  1. Steven Gough Jul 16, 2020.
  2. To quote: “99% x V1 = 70% x 50mL = 35.35mL. Thus, adding 35.35mL of distilled water to 14.65mL of 99% IPA creates a 50mL solution of 70% IPA. ”
  3. Lacey Jul 16, 2020. Thank you so much for this. Very timely, important information. Thank you for breaking it down!

How would you prepare 500 mL of 70 ethanol?

Therefore, 70% volume by volume solution of ethyl alcohol of 500 ml will be made by addition of 350 ml ethyl alcohol and 150 ml water.

How do you make 91 alcohol into 70?

How do you make 90% alcohol?

How much alcohol is required to make the 70% solution?

One liter of 70% alcohol is needed. How much 95% alcohol is required to make the 70% solution. And thank you for last question and any future ones. The amount of alcohol added is equal to the final amount of alcohol. An aluminum cylinder weighs 1.03 N.

How much water is needed to dilute alcohol to 50%?

For example, if you want to dilute 5L of 80% alcohol down to 50%, you will need to add 5 – ( ( 50 x 5 ) / 80 ) = 1.875L of water is required. Note : This statistics calculator is presented for your own personal use and is to be used as a guide only.

What is the ratio of alcohol to water to make 170 proof?

20. 170 Proof is 85% (vol.) Ethanol and 17.46% (vol.) H 20. Ratio: 95/85 = 1.1176471*–then– 17.46% (vol. water in 85% vol/vol alcohol water mixture) x 1.1176471* = 19.514118*Next: 19.514118* – 6.18 = 13.33; Dilution is now 100 Units [e.g., gallons, mL. etc.] of the initial alcohol solution to 13.33 Units

How many milliliters of alcohol are in 300 ml?

300 mL of 70 % alcohol contains 210 mL of alcohol, and 525 mL of 40 % alcohol contains 210 mL of alcohol.