Part 1 - Setup
Each student must complete this section before working with any chemicals in this lab.
|my partner is:||_________________________|
|name of compound:||_________________________|
|volume of solution to make:||_________________________||_____|
|chemical formula for compound:||_________________________|
|molecular weight of compound:||_________________________||_____|
|mass of solute required:||_________________________||_____|
Show your calculations to find the mass of solute. Remember to
use the factor/label method, and don't round anything off until
the final result.
|red litmus paper ®||_________________________||_________________________|
|blue litmus paper ®||_________________________||_________________________|
After recording your observations, gently mix the two solutions in a
flask large enough to hold the combined volume. Write your name (in
pencil) on a piece of clean, dry filter paper, and record it's mass.
Then carefully filter your solution to collect the solid ("residue").
Do not discard the liquid that passes through tht filter paper ("filtrate").
|mass of filter paper:||_________________________||_____|
|color of filtrate:||_________________________|
|smell of filtrate:||_________________________|
|filtrate + red litmus paper ®||_________________________|
|filtrate + blue litmus paper ®||_________________________|
|mass of filter paper + residue:||_________________________||_____|
|mass of residue:||_________________________||_____|
volume of copper (II) sulfate pentahydrate mass of residue (g) source of data
When you have completed the table, you will produce a graph of the data. The rest of the instructions for this lab will be presented in class.
[Continuous Variation Lab score sheet][MHS Chem page]