Which of the following is a common method for quantitative analysis?

In quantitative analysis, the primary objective is to determine the concentration or quantity of a specific analyte in a sample. Each of the listed methods—titration, colorimetry, and gravimetric analysis—plays a significant role in achieving this goal.

Titration is a widely used technique that involves the gradual addition of a titrant to a solution containing the analyte until a reaction reaches completion, which is often indicated by a color change or a measurable physical change. This method allows for precise calculation of the analyte concentration based on the amount of titrant used.

Colorimetry is another effective method for quantitative analysis that measures the intensity of color in a solution, which is directly related to the concentration of the colored analyte. By using Beer's Law, which states that absorbance is proportional to concentration, it's possible to quantify how much analyte is present using standardized solutions.

Gravimetric analysis involves the measurement of mass, typically through the precipitation of an analyte as a solid, followed by filtration, drying, and weighing. This method yields highly accurate and precise results, making it a favorite in various analytical applications.

Given that all these techniques are fundamental approaches in quantitative analysis, the correct selection is indeed that all of the