A solution of unknown concentration of compound X (MW = 150) has an absorbance of 0.600.It had an absorbance of 0.300 at a concentration of 9 mg/dL.What is the molarity of the solution?

Question

Quizplus · Accepted Answer

Given the information in the problem, the equation Cᵤ = Aᵤ/Aₛ × Cₛ can be used to solve for the unknown concentration of compound X.From the equation, Cᵤ = 18 mg/dL.The following steps will convert from mg/dL to mol/L, using the molecular weight: 18 mg/dL = 0.18 g/L × 1 mol/150 g = 0.0012 mol/L.

A Solution of Unknown Concentration of Compound X (MW =