1- What conclusions can you make about the relation between the concentration of a sugar and its measured rotational angle? 2- If the rotation angle for a 2.0 M solution of (S)-2-bromo-2-clorobutane is +240, what can be said about the rotational angle of a 1.0 M solution of (R) - 2-bromo-2- clorobutane? When 0.575 g of monosodium glutamate (MSG) is dissolved in 10.0 mL of water and placed in a sample cell 10.0 cm in length, the observed rotation is +1.470 (using the D line of sodium at 200C). Calculate the specific rotation of MSG. The observed specific optical rotation of a compound is [a] +7.000. The specific optical rotation for the pure enantiomer is +28.00, Calculate the percent of each enantiomer in the solution. The specific rotation of optically pure adrenaline in water (at 250C) is -53. A chemist devised a synthetic route to prepare optically pure adrenaline, but it was suspected that the product was contaminated with a small amount of the undesirable enantiomer. The observed rotation was found to be -450. Calculate the % ee (percent enantiomeric excess) of the product.