Organic Chemistry Answers

A sample of lime CaO weighing 69g prepared by heating 131 g of limestone CaCO3 Calculate the yield of reaction

What are hybridisation states of each carbon atom in the following compounds? CH₂=C=O, CH₃CH=CH₂, (CH₃)₂CO, CH₂=CHCN, C₆H₆.

The determination of copper in a seawater sample gave a mean value of 77.81 mg/L and a standard deviation ss of 1.74 mg/L. (Note: the insignificant figures were retained here because these results are used below in another calculation.) How many samples must be analyzed to obtain a relative standard deviation of 1.7% in the results at the 95% confidence level? (Show your solution)

Draw the graph of dependence of velocity of reaction on the concentration of

substrate (under constant concentration of enzyme). Mark maximum velocity.

assign the NMR spectra of the compound diphenyl tertiary alcohol. including chemical shift , integral ,multiplicity, J (Hz), assignment and interpretation

Iodo acids are not normally prepared by direct iodination of carboxylic acids under conditions of the Hell–Volhard–Zelinsky reaction. Show how you could convert octadecanoic acid to its 2-iodo derivative by an efficient sequence of reactions.

give the structures of the major products you would obtain from reaction of phenol with the Br2(3mol) reagents?

draw 3,3-diflouro-2-hexanone

Suggest if additional use of lighter fluid could help to extract more iodine from the

aqueous layer.

The colors of the two layers after agitating and settling make it clear that most of the iodine was extracted from the aqueous layer into the organic layer, but that does not explain the color change from orange in the aqueous layer to magenta in the organic layer. Use the Internet to research the cause for this color change.