Chemlab: Chemistry 3/5


Qualitative Analysis of Anions

Overview

Getting Started

Techniques

Procedure

FAQ

Full Lab Manual

Introduction & Goals

Chemistry & Background

Key Questions

Prelab Problems

Safety

Procedure

In Your Write-up

Experiments Index

ChemLab Home

Applets

Qualitative Analysis of Anions Applet
With this applet you can use laboratory reagents to test known and unknown samples on the web-based lab bench. Practicing with the applet will help you prepare for this week's lab.

Periodic Table Applet
You can use the periodic table applet to look up information about an element, to learn about periodic trends, or as a molar mass calculator. It may be helpful in writing and balancing chemical equations this week.
Goals
This lab introduces qualitative analysis, the area of chemistry concerned with the identification of substances by their chemical reactions. You will observe the reactions of some simple salts, analyze common household chemicals, and identify an unknown sample by testing its reactivity. This experiment also provides a review of balancing chemical equations and reaction stoichiometry.

Key Questions
1. What is the logical scheme for identifying each anion? Can you draw a flowchart for the identification of each?

2. Would it be possible to identify each of the four anions if they were mixed together? How? Or why not?

3. What is the general class of each test reaction? Precipitation? Acid-Base? Oxidation-Reduction?
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