Question

Multiple-Stage Extraction with Fresh Solvent in Each Stage. Pure water is to be used to extract acetic acid from 400 kg of a feed solution containing 25 wt% acetic acid in isopropyl ether. Use equilibrium data from Appendix A.3. (a) If 400 kg of water is used, calculate the percent recovery in the water solu- tion in a one-stage process.

Answer 1

In a one-stage extraction process with fresh solvent, the percent recovery of acetic acid in the water solution would be 100%.

Step-by-step explanation:

In a multiple-stage extraction process with fresh solvent in each stage, the percent recovery of acetic acid in the water solution can be calculated by considering the solute balance in each stage. Given that 400 kg of water is used in a one-stage process, and the feed solution contains 25 wt% acetic acid, we can calculate the mass of acetic acid in the feed solution as 400 kg * 0.25 = 100 kg. Since the water solution will extract all of the acetic acid, the percent recovery in the water solution would be 100%.

Answer 2

In a one-stage extraction process using 400 kg of water, the percent recovery in the water solution is 100%.

Step-by-step explanation:

In a multiple-stage extraction process, pure water is used to extract acetic acid from a feed solution containing 25 wt% acetic acid in isopropyl ether.

In a one-stage process, if 400 kg of water is used, we can calculate the percent recovery in the water solution.

First, we need to determine how much acetic acid is present in the feed solution. To do this, we can use the weight percent equation:

Weight Percent = (Mass of solute / Mass of solution) x 100%

Substituting the given values, we have:

25 = (Mass of acetic acid / 400) x 100%

Solving for the mass of acetic acid, we find:

Mass of acetic acid = 25/100 x 400 = 100 kg

Now, we can calculate the percent recovery in the water solution:

Percent Recovery = (Amount of acetic acid in water solution / Amount of acetic acid in feed solution) x 100%

Substituting the given values, we have:

Percent Recovery = (100 / 100) x 100% = 100%

So therefore the percent recovery in the water solution is 100%.