Titration of an Acid Final Lab Project

Titration of an Unknown Acid Final Project Lab for Chemistry

A Microsoft Word version of this work is available here: Image:Titration of an Unknown Acid.doc

Purpose

To use the concentration of a known base to determine the concentration of an unknown acid

Directions

Titrate to endpoint a sodium hydroxide solution with a acetic acid solution of an unknown concentration. Use phenolphthalein as an indicator. Start with 10mL of acid.

Results

• Using Acid "B" at .1012M concentration
• Filled up both burettes to 0mL

Titrated with 10.20mL of Acid "B" amd 10.11mL Base

• V_A*C_A=V_B*C_B
• 10.20ml Acid * ?M Acid = 10.11mL base * .1012M Base
• 10.20mL * ?M Acid = 1.023132 mlM base
• /10.20ml
• .1003M = C_A

Formula

NaOH_(aq)+CH₃COOH_(aq) -> Na_(aq) + H₂O_(l)+CH₃COO_(aq)