Anti Essays offers essay examples to help students with their essay writing.

Sign Up

Chem Lab Report

Open Document

Below is a free excerpt of "Chem Lab Report" from Anti Essays, your source for free research papers, essays, and term paper examples.

Laboratory Report for Experiment #5 Titration of Acids and Bases 1

Acids and Bases – Volumetric Analysis

I. Introduction

The purpose of this experiment was to understand the basic techniques of titration, solution preparation and volumetric analysis.

A fundamental property of aqueous solutions is the determination of hydronium ion [H3O+] concentration. The pH of a solution mathematically describes the hydrogen ion concentration [H+], where: (p37)

pH = -log [H+]

A strong acid or base in one which is completely (100%) ionized in dilute aqueous solution. A solution containing 0.1 M of hydronium ions (p37)

HNO3(aq) -> H3O+ (aq) +

II. Procedure:

Directions given in the laboratory manual (p40-41) were followed. KHP, NaOH solutions, HCL, and Phenolphthalein were used.

III. Tabulated Experimental Data:

Table 1

|                               |Trial 1                         |Trial 2                         |Trial 3                         |
|Mass of KHP                     |0.2003g                         |0.1947g                         |0.1921g                         |
|Final buret reading NaOH       |40mL                           |30.5mL                         |22.7mL                         |
|Initial buret reading of NaOH   |50mL                           |40mL                           |30.5mL                         |
|Volume of NaOH used             |10mL                           |9.5mL                           |7.8mL                           |
|Molarity of NaOH               |0.098 M NaOH                   |0.1 M NaOH                     |0.12 M NaOH                     |

Average: (0.098 + 0.100 + 0.120 ) / 3 = 0.106 m NaOH

Table 2

|                               |Trial 1                         |Trial 2                         |Trial 3                         |
|Final buret reading of NaOH     |35.5mL                         |25.5mL                         |15.5mL                         |
|Initial reading of NaOH...

Show More


MLA Citation

"Chem Lab Report". Anti Essays. 18 Aug. 2017


APA Citation

Chem Lab Report. Anti Essays. Retrieved August 18, 2017, from the World Wide Web: http://www.antiessays.com/free-essays/Chem-Lab-Report-112139.html