## 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?**

7 comments

- Steven Gough Jul 16, 2020.
- 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. ”
- 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) |