Red Dye #40 is a common food dye that can be found in cosmetics, food, and soft drinks. In this experiment, the goal was to determine the concentration of Red Dye #40 in different soft drinks and a solution with an unknown concentration using a standard curve. The standard curve was created using the absorbance values from solutions with a known concentration of Red Dye #40. Then, the soft drinks and unknown concentration were each diluted until the spectrophotometer could read the absorbance. The concentrations were then determined by using the equation of the standard curve of the solutions with a known concentration. The Hawaiian Punch had the highest concentration of Red Dye #40 and the Diet Cherry 7-Up has the lowest concentration. The
