If a solution is diluted from 1000 ppm to 100 ppm, what is the dilution factor?

If a solution is diluted from 1000 ppm to 100 ppm, what is the dilution factor?

Correct Answer: 1:10

Step 1: Understand what ppm means. PPM stands for 'parts per million' and indicates the concentration of a solution.
Step 2: Identify the initial concentration. The initial concentration is 1000 ppm.
Step 3: Identify the final concentration. The final concentration after dilution is 100 ppm.
Step 4: Calculate the dilution factor. To find the dilution factor, divide the initial concentration by the final concentration: 1000 ppm / 100 ppm.
Step 5: Perform the calculation. 1000 divided by 100 equals 10.
Step 6: Express the dilution factor. The dilution factor can be expressed as 1:10, meaning the solution is diluted by a factor of 10.

Dilution Factor – The dilution factor is the ratio of the initial concentration to the final concentration, indicating how much the solution has been diluted.
Parts Per Million (ppm) – ppm is a unit of measurement that denotes the concentration of a substance in a solution, where 1000 ppm means 1000 parts of solute per million parts of solution.