2021-07-07

## How would you make 75 ethanol from 95 ethanol?

So, for preparing 125 ml of 75% ethanol solution, one must take 98.684 ml of 95% ethanol solution and 26.316 ml of Water.

## How would you prepare 100 mL of 70% alcohol from 95% alcohol?

The solution was prepared by taking a part of the 95% solution. We determine this volume, V1 , of the stock solution with M1=95% M 1 = 95 % wherein we can produce a solution with a volume of V2=100 mL V 2 = 100 m L and a concentration of M2=70% M 2 = 70 % , using the equation, M1V1=M2V2 M 1 V 1 = M 2 V 2 .

How would you prepare 200 mL of 70% alcohol from 95% alcohol?

70% of 200 ml is 140 ml, so you would need 140ml of pure ethanol. But you have 95% ethanol, so you would need a little more of that concentrated solution to make the dilute solution. The answer could be 147.4 ml.

How do you make a 70% solution?

Step 1 – In a clean spray bottle, combine the ethyl alcohol with water. Mix well by shaking gently. Step 2 – Store the 70% alcohol solution solution in a spray bottle for convenient measured dispensing. Store bottle away from sources of heat, spark, or direct sunlight.

### How do you make 96 ethanol?

Mix 365 ml of 96% ethanol with 135 ml of water.

### Can I dilute alcohol with water?

While it is generally okay to use it at the 70/30 ratio, many detailers prefer to dilute it down to a 50/50 (Alcohol to Distilled Water) ratio for optimal results.

How do you make 70 isopropyl alcohol at home?

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 do you make 90 ethyl 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 75 ethanol?

The density of 20% ethanol is 0.97g/L. So your target solution has 300*(0.97)*(0.2) = 58g of alcohol in it. The density of 75% ethanol is 0.86g/L. So to obtain the 58g of alcohol you need, you would need 58/(0.86 * 0.75) = 90ml of 75% ethanol.

#### What is the concentration of 95 ethanol?

Ethanol concentration table: what is the percentage by volume or weight?

Concentration of ethanol by weight (w/w) Concentration of ethanol by volume (v/v)
85.0% (w/w) 89.5% (v/v)
89.0% (w/w) 92.5% (v/v)
90.0% (w/w) 93.3% (v/v)
95.0% (w/w) 96.8% (v/v)