Chemistry Lab Report 4

Chemistry Virtual Labs

General Instructions

All labs have two parts.

Part 1

Virtual Lab Exercises – To be carried out using a simulated lab or a worksheet. If it is a simulated lab, you need to submit a lab report. Otherwise, answers in a word document should be sufficient. Please refer to the lab report writing links given in the course.

Part 2

Completion of an assignment.

Both parts need to be submitted to the relevant, weekly, assignment dropbox.

N.B. Any other notes given are for your information only. You do not have to complete those exercises.

Week 4 Lab

Formula of a Hydrate and Electronic Configurations

Part 1

Complete the worksheets,

1. Determining the Formula of a Hydrate Simulated Lab Lab Report (Worksheet 1)

Watch:

Now write a lab report as if you conducted the lab. Watch the video several times get the procedure correct.

Now watch:

The above video demonstrates the process for determining the formula of a hydrate using a compound similar to the one in your experiment. While the compound in the video may differ, the calculation method remains the same.

Your Experimental Data:

• Mass of hydrated copper(II) sulfate = 9.7 g
• Mass of anhydrous copper(II) sulfate = 6.2 g

Instructions:

1. Watch the video carefully to understand the method of calculating the number of water molecules in a hydrate.
2. Using the data provided above, follow the same calculation steps to determine the formula of the hydrated copper(II) sulfate.
3. Use the following approach:

• Mass of water lost = Mass of hydrate Mass of anhydrous compound
• Moles of anhydrous copper(II) sulfate (CuSO4) = mass / molar mass (159.61 g/mol)
• Moles of water lost (H2O) = mass / molar mass (18.02 g/mol)
• Mole ratio = moles of water moles of CuSO4
• Round to the nearest whole number to find the value of “x” in CuSO4xH2O

Assignment: Lab Report

Prepare and submit a formal lab report with the following components:

• Title
• Objective
• Materials & Data
• Procedure (based on the videos method)
• Calculations (show each step clearly)
• Analysis
• Conclusion: Report the empirical formula of the hydrated copper(II) sulfate based on your calculations.