Planning and Designing Experiments

Chemistry
Tutor: None Selected Time limit: 1 Day

Grace wants to design a new tin to store their new "Citrus Splash Fruit Juice." Robert suggests that magnesium be used and Douglas suggest that copper bu used. Plan and design an experiment to support Robert's or Douglas' suggestion.

Include variables(manipulating, responding and control)

Include method and apparatus

Jun 10th, 2015

Thank you for the opportunity to help you with your question!

Citric acid is not just an acid, but also a chelating agent, it does aid in dissolving of the metal. copper metal would be disolved in the solution

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 10th, 2015

How would I conduct and experiment to prove?

Jun 10th, 2015

What you will need:
1-1.5 v power source (old batteries preferred)
some kind of battery holder with alligator clips
small, non-conductive, disposable container (plastic or glass, the small yogurt containers are great)
a weak acid (vinegar: acetic acid, or lemon/lime juice: citric acid)
two or more pennies
quarters, nickles and dimes (almost any hardware you want platted)
time (at least 1.5 hours...I think, 3 is better)
plastic wrap (Saran Wrap)

Picture of Fill your container with the acid

electroplating_2_2.jpg

First take you job, which will be a quarter for me, and mark its height inside the container - this will be a fill line. 

Remove the quarter and fill the acid past the line. If you don't have enough acid, you can add water and dilute it, but do not go past 50% acid (since vinegar and juice is already diluted). I had only half the lime juice I need so I just added more water until the surface was past the fill line.


Jun 10th, 2015

What you will need:
1-1.5 v power source (old batteries preferred)
some kind of battery holder with alligator clips
small, non-conductive, disposable container (plastic or glass, the small yogurt containers are great)
a weak acid (vinegar: acetic acid, or lemon/lime juice: citric acid)
two or more pennies
quarters, nickles and dimes (almost any hardware you want platted)
time (at least 1.5 hours...I think, 3 is better)
plastic wrap (Saran Wrap)

Picture of Fill your container with the acid

electroplating_2_2.jpg

First take you job, which will be a quarter for me, and mark its height inside the container - this will be a fill line. 

Remove the quarter and fill the acid past the line. If you don't have enough acid, you can add water and dilute it, but do not go past 50% acid (since vinegar and juice is already diluted). I had only half the lime juice I need so I just added more water until the surface was past the fill line.


Jun 10th, 2015

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Jun 10th, 2015
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