Posted by **chi** on Monday, July 28, 2014 at 12:51pm.

Potassium 2:5 Chloride solution 30ml. How many milliliters of a potassium chloride 3:5 solution do you need to prepare the order?

- chemistry -
**DrBob222**, Monday, July 28, 2014 at 4:40pm
I asked earlier what you meant by a 2:5 and 3:5 solution and you didn't answer. I asked because there are several meanings to this. In my book a 2:5 solution is 40%(200/5) and a 3:5 solution is 60% (300/5).

So I use

c1v1 = c2v2

40*30 = 60*v2

v2 = 20

That is, add 20 mL of the 3:5 to a flask and add sufficient water to make 30 mL (10 mL) H2O to end up with 30 mL of 2:5 solution.

## Answer This Question

## Related Questions

- pharmacy math - Rx Potassium 2:5 Chloride solution 30ml. How many milliliters of...
- chemistry - Potassium Chloride 3:4 solution 30ml. How many milliliters of a ...
- pharmacy math - RX Potassium Chloride 3:5 solution 30ml. how many millimeters of...
- chemistry Molarity - You have 353 mL of a 1.25 M potassium Chloride solution, ...
- chemistry - I have two solutions of 0.1 Molar. A solution of magnesium chloride ...
- Chemistry - How would you prepare 150.0 mL of a 0.200 M aqueous solution of ...
- chemistry - . How many grams of potassium chloride, KCl, are needed to prepare 0...
- Chemistry - A given solution contained potassium chloride, KCl, and hydrochloric...
- Chemistry - A)What mass of silver chloride can be produced from 1.33 of a 0.207 ...
- chem - A solution contains 4.60 g KCl in 179 mL of solution. The density of the ...

More Related Questions