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Acid Base Titration Lab

Autor:   •  December 9, 2011  •  Essay  •  269 Words (2 Pages)  •  1,709 Views

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Chemistry 40S

Acid-Base Titration Lab

Determining the concentration of a hydrochloric acid solution by acid-base titration

Ira C. Kowall

11/2/2011

Purpose

Determine the concentration of a solution of hydrochloric acid, using a primary standard aqueous NaOH solution.

Materials

250 mL beakers (2)

50 mL burets (2)

Double buret clamp

Ring stand

250 mL Erienmeyer flask

Standardized solution of sodium hydroxide

Unknown solution of hydrochloric acid

Phenolphthalein solution

Diagram

Procedure: see handout

Data Table (observations)

Measurement Readings Trial 1 Trial 2 Trial 3

[NaOH] 1 mol/L 1mol/L 1mol/L

Initial base buret 0.0 mL 8.9 mL 0.00 mL

Final base buret 42.5 mL 44.3 mL 28.7 mL

Volume NaOH 42.5 mL 35.3 mL 28.7 mL

Initial acid buret 0.1 mL 26 mL 13.4 mL

Final acid buret 26 mL 47.6 mL 33.5 mL

Volume of HCl 25.9 mL 21.6 mL 20.1 mL

Analysis

...

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