This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Step 1: Identify the given values. Observed rotation () = +2.3^ Mass of (R)-2-methylbutanol = 10.0 g Volume of solution = 50 mL Path length of polarimeter tube (l) = 20 cm Step 2: Convert the path length to decimeters (dm). l = 20 cm × 1 dm10 cm = 2 dm Step 3: Calculate the concentration (c) of the solution in g/mL. c = mass of solutevolume of solution = 10.0 g50 mL = 0.2 g/mL Step 4: Use the formula for specific rotation. The specific rotation [] is calculated using the formula: [] = ()/(l · c) where is the observed rotation, l is the path length in decimeters (dm), and c is the concentration in g/mL. Step 5: Substitute the values and calculate the specific rotation. [] = (+2.3^)/(2 dm) × 0.2 g/mL [] = (2.3)/(0.4) [] = 5.75 The specific rotation of (R)-2-methylbutanol is 5.75^ dm^-1 (g/mL)^-1. Step 6: Compare the result with the given options. The calculated specific rotation is 5.75. This matches option (A). The final answer is A