The concentration of copper II sulfate in a given sample can be quantified using colorimetry by following these steps:1. Prepare a series of standard solutions: First, prepare a series of standard solutions with known concentrations of copper II sulfate. These solutions will be used to create a calibration curve, which will help in determining the concentration of the unknown sample.2. Measure the absorbance of the standard solutions: Using a colorimeter or a spectrophotometer, measure the absorbance of each standard solution at a specific wavelength usually around 600-800 nm, where copper II sulfate has its maximum absorbance . Record the absorbance values.3. Create a calibration curve: Plot the absorbance values of the standard solutions against their respective concentrations. The resulting graph should be a straight line, as the relationship between absorbance and concentration is linear according to the Beer-Lambert Law A = cl, where A is absorbance, is the molar absorptivity, c is the concentration, and l is the path length .4. Measure the absorbance of the unknown sample: Using the same wavelength as before, measure the absorbance of the unknown copper II sulfate sample.5. Determine the concentration of the unknown sample: Using the calibration curve, find the concentration of the unknown sample by locating its absorbance value on the y-axis and tracing it to the corresponding concentration on the x-axis.The intensity of the color produced by the copper II sulfate solution is directly proportional to its concentration. As the concentration of copper II sulfate increases, the intensity of the blue color produced also increases. This is due to the Beer-Lambert Law, which states that the absorbance of a solution is directly proportional to its concentration. In colorimetry, a higher absorbance value corresponds to a more intense color. Therefore, a higher concentration of copper II sulfate will result in a more intense blue color.