Farah chatelier

Bergen Community College Physical Sciences Department

General Chemistry II CHM 241

LABORATORY MANUAL 2019

Second Edition

Dr. Ara Kahyaoglu Prof. Jean Acken Associate Professor Assistant Professor

BERGEN COMMUNITY COLLEGE (BCC) is committed to providing quality material that promotes the best in inquiry-based

science education. However, conditions of actual use may vary, and the safety procedures and practices described in this resource

are intended to serve only as a guide. Additional precautionary measures may be required. BCC and the authors do not warrant or

represent that the procedures and practices in this resource meet any safety code or standard of federal, state, or local regulations.

BCC and the authors disclaim any liability for personal inquiry or demand to property arising out of or relating to the use of this

resource, to include any of the recommendations, instructions, or materials contained therein.

Bergen Community College

400 Paramus Road, Paramus, NJ 0765

Bergen Community College 2 General Chemistry II Laboratory

PREFACE

To the instructor,

This manual is available as a free download from the Bergen Community College website.

The Science Department’s aim has been to provide low cost, safe, and interesting, yet

relevant experiments.

Students are to complete the pre-laboratory exercises prior to the laboratory session. The

departmental format for the laboratory report can be found in the course syllabus.

Much effort has been made by the chemistry faculty to review this manual and make it as

error-free and accurate as possible. However, some errors will have escaped our notice.

Your help in forwarding to us any errors, inaccuracies, and/or suggestions will be greatly

appreciated. We will definitely welcome your comments and suggestions. We will make the

changes and improvements as soon as we can to make the updated manual ready for

succeeding semesters. We can be contacted at akahyaoglu@bergen.edu and

jacken@bergen.edu.

Good luck and have a good semester. We look forward to hearing from you.

To the students,

This manual is available to BCC students for free download from the Bergen Community

College website. The Science Department’s aim has been to provide low cost, safe, and

interesting, yet relevant experiments that illustrate the concepts presented in the lecture

course.

Safety is everyone’s number one priority. Do not hesitate to ask your instructor if you do not

understand the procedure.

Keep in mind that your instructor expects you to be prepared for every laboratory session.

We appreciate the efforts of professors PJ Ricatto, Linda Box, Gary Porter, Brent Chapman,

Frank Ramdayal, Farah Rezae and Riwa Dandan through their suggestions and corrections.

Dr. Ara Kahyaoglu, author

Prof. Jean Acken, contributor and editor

mailto:akahyaoglu@bergen.edu
mailto:jacken@bergen.edu
Bergen Community College 3 General Chemistry II Laboratory

TABLE OF CONTENTS

Page

Course Schedule 4

Laboratory Safety 5

Integrity of Data Guidelines 8

Experiment 1. Heat of Fusion 9

Experiment 2. Intermolecular Forces 14

Experiment 3. Spectroscopy 23

Experiment 4. Percent Copper in Brass 31

Experiment 5. Freezing Point Depression 39

Experiment 6. Chemical Kinetics 50

Experiment 7. Le Châtelier's Principle 63

Experiment 8. Coordination Number 75

Experiment 9. Identification of a Weak Acid 83

Experiment 10. Solubility Product 94

Experiment 11. Qualitative Analysis of Cations 101

Experiment 12. Titration of Hydrogen Peroxide 109

Experiment 13. Electrochemistry 119