1.8: Experiment 6 - Polarity and Solubility
- Page ID
- 306274
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By the end of this lab, students should be able to:
- Explore the relationship between polarity and solubility.
- Determine the solubility of polar and nonpolar solutes, and an ionic solute in different solvents.
Prior knowledge:
Introduction
Have you noticed the common solubility problems in our everyday life? If you get sap from a pine tree on your clothes, or wax from a candle on the table, or bike chain grease on your pants, these substances will not be easily removed with just water. Do you think this demonstrates a solubility problem?
In this lab, you will explore how polarity affects whether substances dissolve in each other. What is the meaning of “like dissolves like”? Why are nonpolar and polar substances immiscible? You will explore what it means chemically for a substance to be polar or nonpolar and how you can use this to eventually get the stains out of your clothes.
Pre-Lab Primer
This pre-lab assignment is an individual assignment to be completed on your own with the help of the "Prior Knowledge" links at the top of this page. All work must be in your own words. Do not copy and paste information from the internet. The assignment will be due 10 minutes before your lab begins. Late work will not be accepted.
The document below is a preview only. Please do not try to screenshot or print it off. You will be able to find your assignment to work on in your Google Classroom.
Interactive Element
In-Lab Assignments
Individual Assignment
The first assignment for this week will be an individual assignment. Your lab instructor will play a video for everyone at the beginning of lab. Based on the contents of the video, you will answer the questions in the document. After everyone has finished and turned this assignment in, your instructor will put you into your Breakout Room with your group on Zoom to complete the second assignment.
The document below is a preview only. Please do not try to screenshot or print it off. You will be able to find your assignment to work on in your Google Classroom.
Interactive Element
Group Assignment
The second assignment will be a worksheet that you complete with your group members. You will use the data collected from the Individual Assignment to complete the questions for this assignment.
Each person can type in this document at the same time. Remember, part of your grade comes from your participation during lab, so there will be a Peer Evaluation this week. Make sure you are contributing to discussion and to the completion of the worksheet. The worksheet will be due by the end of your lab session, and late work is not accepted. Be sure to turn your assignment in on Google Classroom.
The document below is a preview only. Please do not try to screenshot or print it off. You will be able to find your assignment to work on in your Google Classroom.
Interactive Element
Post-Lab Problem Set
After you have had a chance to work on the data analysis with your group during lab, you will be given the Post-Lab Problem Set. This is an individual assignment that must be completed on your own, and it is based on your Pre-Lab Primer and your In-Lab Assignments. This assignment will be due the day after your lab meets by 5 p.m. For example, if your lab is on Monday, the Post-Lab Problem Set will be due on Tuesday at 5 p.m. No late work is accepted.
The document below is a preview only. Please do not try to screenshot or print it off. You will be able to find your assignment to work on in your Google Classroom.
Interactive Element