1.1 a) Butyric acid is to be extracted from 500 ml of an aqueous solution containing 4 g of butyric acid using ether as an extractant. The distribution coefficient of this system is 3 at 25 °C. In a minimum of ten points show that the butyric acid extracted in a single batch with 500 ml ether is less than that extracted in two batches of 250 ml portions. b) Briefly describe different strategies that can be used to obtain a chemical separation in a minimum of eight points. c) Briefly discuss ten reasons why chemical separations methods are used in analytical chemistry.

1.1 a) Butyric acid is to be extracted from 500 ml of an aqueous solution containing 4 g of butyric acid using ether as an extractant. The distribution coefficient of this system is 3 at 25 °C. show that the butyric acid extracted in a single batch with 500 ml ether is less than that extracted in two batches of 250 ml portions. b) Briefly describe different strategies that can be used to obtain a chemical separation. c) Briefly discuss why chemical separations methods are used in analytical chemistry.

Q) Calculate the “Chlorine Demand of Water”, if “addition of (i.e. Chlorine added)” 200 kg/d of chlorine in a flow of 0.088 m3/sec gives a ‘residual of 0.20 mg/l as Chlorine (Cl2).

Calculate the mass percent of the ascorbic acid in the same show full solution Situation: The pounded Vitamin C tablet was half into two below are the calculated data in the experiment. Each of the half are transfered in a 250ml erlen meyer flask and added 75ml of deionized water for the vitamin C to dissolve. Then it was prepared for titration where the burette was filled with 0.09794M standardize NaOH solution then a total of with 3 drops 2% phenolphthalein indicator was added to each erlen meyer flask l, swrill it and begin the titration. below are the following data gathered: Vitamins used: Nature Made vitamin C 500mg tablet Trial 1 Mass: 0.3108g of Vitamin C tablet Initial volume: 1.6mL Final volume: 15.4mL   Trial 2 Mass: 0.3349g Initial volume: 15.4 mL Final volume: 30.2 mL

[2] A mixture containing 70 mol% n-heptane and 30 mol% n-octane is subjected to a batch distillation at 1 atm pressure. What will be the composition of the distillate after the first 25 mol% of the original charge is distilled. Estimate the initial and final boiling point and what is the composition of the first vapor condensed? T-x-y values of n-heptane 106 0.647 T. "C 98.4 100 103 110 115 120 122 124 125.6 1 0.922 0.776 0.495 0.318 0.156 0.097 0.039 1 0.963 0.883 0.801 0.681 0.500 0.281 0.184 0.078

It is known that acid content has a major effect on theflavor of vinegars, but most cheaper vinegars are diluted similarly to 5% acidity Wt./vol. % is equivalent to gsolute per 100mL solution (so 5% is equivalent to 5 g acid/100 mL solution).  a.) First, calculate the approximate molar concentration of acetic acid in the 5% wt./vol vinegar. b.) Next, calculate the expected molarity of acetic acid in the solution upon dilution by a factor of 5. Thank you!

1.4 and 1.5

What is the percentage of organic compound that is dissolved in soil pore water that has a porosity of 0.41 and the Kd = 563 L kg-1 ? Report your answer in percentage and enter it is X.Xx10(-X) or X.Xx10(X)

1. Lavender and jasmine are flowers which are used in the industry to produce essential oils/tincture. Describe a suitable method to extract the essential oil/tincture from these flowers. Explain in detail, the methods used (e.g., set up). You may include diagram/s in your explanation.

Pls solve correctly and explain briefly ...! Plz do as soon as possible ...!