Printer ink is a mixture of chemicals. A student used chromatography to investigate the colours in a printer ink. The student put a spot of the printer ink on the start line. Figure 4 shows the results. Figure 4 Not to scale Explain why the red colour did not move from the start line. [2 mark __

## Step 1: Understanding the Problem### The problem involves using chromatography to analyze the colors in printer ink. The student needs to determine the components of the ink based on the chromatogram results.## Step 2: Analyzing the Chromatogram### Examine the chromatogram to identify the different colors that have separated from the printer ink. Each color represents a different component in the mixture.## Step 3: Calculating Rf Values### The Rf value (ratio of fronts) for each color is calculated using the formula: ### Measure the distance each color traveled from the start line and the total distance the solvent traveled.## Step 4: Interpreting the Results### Compare the Rf values to known standards to identify the specific chemicals or pigments present in the printer ink.#