Description
Evaluating Precipitation Reactions Lecture & InstructionsPage
Unformatted Attachment Preview
Lab 7 Precipitation Reactions
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Report all equations in a proper mathematical format, with the correct signs and symbols.
Pre-Lab Questions”
1. What is percent yield and why is percent yield important to the field of chemistry?
Click here to enter text.
2. What information would you need to calculate a percent yield?
Click here to enter text.
3. Research some common precipitation reactions online and list two, here.
Click here to enter text.
4. Why is atomic mass significant to calculating percent yield?
Click here to enter text.
CHEM101L
Lab 7 Precipitation Reactions
CHEM101L
EXPERIMENT 1: TESTING FOR THE CALCIUM ION
Introduction Questions
1. In this experiment, you will test to see if the calcium ion is present in solution. How will you
know if this is the case?
Click here to enter text.
2. Under what conditions do precipitates form during a chemical reaction?
Click here to enter text.
3. What chemicals do you add to the test tube in Step 1 and Step 2 of this experiment?
a. Step 1: Click here to enter text.
Step 2: Click here to enter text.
Lab 7 Precipitation Reactions
CHEM101L
Data and Observations
Below, insert a photo of your test tube as soon as you mix the two chemicals together, before the
precipitate forms. Your name must be included in the background for credit.
Below, insert a photo of your test tube after the reaction has completed. The precipitate must be clearly
visible in the photo for credit on this lab. You must also include your name in the background of the
photo.
Lab 7 Precipitation Reactions
CHEM101L
Lab 7 Precipitation Reactions
CHEM101L
1. Below, describe what you observed throughout the course of the reaction. Be specific.
Click here to enter text.
Results and Discussion
1. In your own words define and describe the reaction that occurred.
Click here to enter text.
2. Write the reaction equation that took place, below. Ensure that you note the state of the
compounds where appropriate.
Click here to enter text.
3. Suppose you didn’t know that the original solution contained the calcium ion. From your results,
how can you know that it did in fact contain calcium?
Click here to enter text.
4. What is the difference between Ca and Ca2+? They are both calcium, but what makes them
different?
Click here to enter text.
5. What is the chemical name (not the formula) for the precipitate formed during the reaction?
Click here to enter text.
Purchase answer to see full
attachment
