# You need to determine the concentration of a sulfuric acid solution by titration with a standard...

## Question:

You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You have a 0.1666 M standard solution. You take a 25.00 mL sample of the original acid solution and dilute it to 250.0 mL. You then take a 10.00 mL sample of the dilute acid solution and titrate it with the standard solution. You need 16.26 mL of the standard solution to reach the endpoint. What is the concentration of the original acid solution?

## Titration

Titration is a laboratory method for determining the concentration of an unknown solution. There are some terms used in the titration:

- Standard solution: known concentrations solution. It is used as titrants. It is in a burette.
- Analyte: unknown concentration solution. It is in an Erlenmeyer.
- Endpoint/equivalence point: a point of volume when the reaction is complete (we will stop the titration).

## Answer and Explanation: 1

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We do some treatments on this problem.

*Treatment 1*: We take 25 mL (0.025 L) of original {eq}\rm H_2SO_4
{/eq} solution and dilute it to 250.0 mL...

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Chapter 11 / Lesson 9Learn about strong acid - strong base titration. Understand strong acid - strong base reactions and how to find an unknown substance concentration, and see the curve.

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