Br 1-bromobutane 1. How many types of proton environment? 2. Show the (n+1) effect on splitting pattern 3. Do you see the no of proton/protons in each peak (Integration)? 'H NMR 2 2 PPM 2 2 3

Part A - Reactions of Carbon Dioxide Gas Place a small lump of dry ice into a large test-tube. To the dry ice add about 5 mL of water. After the gas has bubbled through the water for a few minutes (so that it may be assumed the solution is saturated with the gas), test the acidity of the solution by adding 1 drop of universal indicator solution and check the pH on the colour chart provided. Record your observations onto your results page. 1. RESULTS (Remember to not include spectator ions in ionic equations.) Part A - Reactions of Carbon Dioxide Gas 2. Place two large test tubes in the test tube rack. In one tube place a small lump of dry ice and cover the mouth of the tube with a loose plug of cotton wool. Stand the test tube in a beaker of containing a little warm water (from the hot water tap) for a minute. The test tube will fill with carbon dioxide gas. In the meantime, obtain two small (100 or 150 mL) beakers, and place 20 mL of water in each and add 3 drops of universal…

16.72 Show how P = kT(a In Q/OV), leads to PV = nRT.

Penicillin F is recovered from a dilute aqueous fermentation broth by extraction with amyl acetate, using 6.5 volumes of solvent per 100. volumes of the aqueous phase. At pH = 3.8 the distribution coefficient KD is 74. (a) What fraction of the penicillin would be recovered in a single ideal stage? (b) What would be the recovery with three-stage extraction using fresh solvent in both stages? (c) How many ideal stages would be needed to give the same recovery as in part (b) if a counterflow cascade were used with V/L = 0.065?