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An organic compound with a molecular mass of 236.5 g/mol was dissolved in a 10.00 mL volumetric flask (Solution 1). A 1.00 mL aliquot of
An organic compound with a molecular mass of 236.5 g/mol was dissolved in a 10.00 mL volumetric flask (Solution 1). A 1.00 mL aliquot of this solution was pipetted into a 25.00 mL volumetric flask, and diluted to the mark (Solution 2). This solution was found to absorb 76.51 % of the incident radiation when the solution (Solution 2) was analysed at 560 nm by molecular spectroscopy using a 1.00 cm cuvette. The molar absorptivity of the organic compound at 560 nm is 2568 Abs. units. L. mol-1. cm. a) Calculate the concentration of the compound (in moles/litre) in the cuvette (i.e., the solution taken from the 25.00 ml flask). b) What was the concentration of the compound (in moles/litre) in the 10.00 mL flask (Solution 1)? c) What mass of the organic compound (in grams) was used to make the 10.00 mL solution (Solution 1)
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