# Analytical Chemistry

posted by .

Solute S has a partition coefficient of 4.3 between water (phase 1) and hexane (phase 2).

(a) Calculate the concentration of S in hexane if [Swater] is 0.030 M

(b) If the volume of water is 71.0 mL and the volume of hexane is 16.0 mL, find the quotient (mol S in hexane/mol S in water).

• Analytical Chemistry -

It isn't clear to me how your partition coefficient is defined. IF it is
Kphase 1/phase 2 = 4.3 it is done as follows
4.3 = (in H2O)/(in hexane) = (0.03/x and solve for x.

However, I strongly suspect it is defined as
Kphase 2/phase 1. You can move the numbers around accordingly.

## Similar Questions

1. ### organic chemistry

Partition (distribution) coefficient, k, of benzyl alcohol in hexane and water is 12.0. Choose for the correct equation for the amount of benzyl alcohol as x that you should use to calculate the amount of benzyl alcohol extracted with …
2. ### chemistry -drbob222

I'm not sure if my 1 and 2 are correct, and I don't know how to do 3, 4, and 5. Any help is appreciated! 1) You wish to extract an organic compound from an aqueous phase into an organic layer. to minimizing the number of transfer steps, …
3. ### science

An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details …
4. ### chemistry

An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details …
5. ### chemistry

an aqueous solution contains 2 solutes A&B.A is soluble in hexane,B is not.Hexane is liquid at rom temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe giving full practical details …
6. ### Chemistry

I'm so confused as to how to even begin the problem and where to put whats given to me into an equation. 1) If the value of Kp is 0.5 for the distribution of a compound between pentane (solvent 2) and water (solvent 1), and equal volumes …
7. ### Chemistry

A) A compound distributes between water (solvent 1) and benzene (solvent 2) with Kp = 2.7. If 1.0g of the compound were dissolved in 100mL of water, how much compound could be extracted by three 10-mL portions of benzene?
8. ### Chemistry - University

Pentane (C5H12) and hexane (C6H14) form an ideal solution. The vapour pressure of pentane at 25oC is 511 mmHg and that for hexane is 150 mmHg. A solution is prepared by mixing pentane (density = 0.63 g/mL) and hexane (density = 0.66 …
9. ### chemistry

Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 43.9 g of hexane is mixed with 57. g of oxygen. Calculate the minimum mass of hexane that could be left over by the chemical …
10. ### chemistry

my developing solvent is hexane toluene acetic acid(5:5:1)nd my samples rf nd impurity rf is very close,my spots r not separating properly,so which hexane should hav to be used?

More Similar Questions