Structures for Compounds

Compound A is optically active and has the molecular formula C5H10O. On catalytic hydrogenation (addition of hydrogen) of A, Compound B is obtained. Compound B has the molecular formula C5H12O and is optically inactive. Give the structure for Compounds A and B.

Meso Forms

Which of the following compounds have a meso form? (a) 2,3-Dibromopentane (b) 2,4-Dibromopentane (c) 2,3-Dibromobutane

Weight of Water Required for Steam Distillation

Calculate the weight of water required to steam distill 500 mg of bromobenzene at 95 degrees C. The vapor pressure of water at his temperature is 640 torr; bromobenzene, 120 torr.

Separating Mixtures via Steam Distillation

Steam distillation may be used to separate a mixture of p-nitrophenoln and o-nitrophenol. The ortho isomer distills at 93 degrees C; the para isomer does not. Explain.

Structures of Acids

The chiral carboxylic acid A (C5H6O2) reacts with 1 mol of hydrogen gas on catalytic hydrogenation. The product is an achiral carboxylic acid B (C5H8O2). What are the structures of Compounds A and B?