# What is the Titration Curve?

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When working with chemicals, it's often important to know just how much of a specific chemical you're dealing with. There are a number of methods you can use to get this information depending on the specific substances you're working with, and the equipment you have available. In many cases, it's useful to graph the data as well, so you aren't just dealing with raw numbers. The graph gives you perspective and often makes multiple data points accessible with a single glance. The graphs most commonly used for this are titration curves.

#### TL;DR (Too Long; Didn't Read)

A titration curve is a graph that shows both the volume of a chemical and the pH of the solution containing that chemical on a two-dimensional axis. The volume is represented as an independent variable, while the pH is a dependent variable.

## What Are Titrations?

Titrations are a form of chemical analysis, useful in determining the concentration of a specific chemical component within a solution. A titration is used when the chemical being measured is known, but its volume within the solution is not known. In a titration, a measured amount of a solution with a known concentration (known as the titrant) is added to the solution with an unknown concentration (known as the analyte). After any chemical reaction between the two solutions is complete, measurements are taken to determine the volume of the chemical being measured that's present in the final solution. Because the makeup of the titrant is known, and all chemicals in the solutions have been identified, this information is used to determine how much of the chemical is in the analyte.

## Titration Curves

Titration curves are graphs that display the information gathered by a titration. The information is displayed on a two-dimensional axis, typically with chemical volume on the horizontal axis and solution pH on the vertical axis. The curve of the graph shows the change in solution pH as the volume of the chemical changes due to the addition of the titrant. Chemical volume is an independent variable on the graph, while pH (which changes as the volume of the measured chemical increases) is a dependent variable.