1. Names and Formulas of Precipitates
A virtual lab

2. Note
Get a copy of this lab from your teacher or from the class website. Read the procedure of the lab. Then look at the following slides to attain your data for the lab.

3. Part 1
We will carry out the various combinations of ionic compounds on the data sheet and see which combinations produce a precipitate and which ones do not. It is important that you include in your observations the color and whether a precipitate if formed. Remember: when the solution turns cloudy, a precipitate formed; when it stays clear, no precipitate formed

4. Part 1
This is the reaction sheet before the reactions are carried out.

5. Part 1
Two drops of the indicated solutions were added to each column.

6. Part 1
And two drops of the indicated solutions were added to each row.

7. Part 1
The overall reactions are shown in the next three slides. Each slide has the same results, but the background is a different color so that you can see the results more clearly.

11. Part 1 Questions
On the back of the page you are asked some questions. Remember that a cation is a positively charged ion and an anion is a negatively charged ion.
To get you started, let’s look question 1. Look at each cation in the lab and see how each one reacted. For instance, Mg2+. If you look at every reaction involving Mg2+, you’ll notice that it rarely formed precipitates. So Mg2+ would not be a good answer for question one. Continue looking at each of the other cations to find which ones did consistently form precipitates.

12. Part 2
Write the formulas for each of the precipitates that formed in part 2 of the lab.

13. Part 3
Write the IUPAC names of all the precipitates formed in part 2.

14. Due Date
You have two days for each day you were absent to complete the lab sheet for this lab. Be sure to finish all of the questions at the end of the lab. There are a lot of concepts in the lab, so if you have any questions, see your chemistry teacher for help!