Home > categories > Minerals & Metallurgy > Aluminum Foils > What is the white precipitate that has been formed while we were doing this experimentAlso why did it form?
Question:

What is the white precipitate that has been formed while we were doing this experimentAlso why did it form?

I am currently taking chemistry and in class we did an experiment withCopper Chloride, and i have a question that i thought you might be able to answer for meFor our experiment we took a big glass container with Copper Chloride and water inside of it, the water was a clear blueThen we put an Aluminum Can inside of the big class containerWe let it sit for 5 daysWhen we took a look at the experiment we noticed of course that there was copper at the bottom of the container, we then took the can out of the waterWe let it sit again without the can and the water began to turn blue again as if we had just started the project and nothing had happenedWe still have the copper at the bottom of the container, but now there is a milky white substance that has formed in the middle of the containerThere is the clear blue water at the top of the container, then a milky white/blue precipitate, then the copper at the bottom.

Answer:

Bread Pudding with Vanilla SauceSouthern Living FREE TRIAL - Recipes More!Rating: Read Reviews Rate and Review Print: Full page | 3x5 | 4x6 Send: E-mail | IM Add to Saved Recipes Add to Saved Menus Add to Shopping List Add a Note Ingredients 3 large eggs, lightly beaten 1 1/2 cups sugar 2 tablespoons light brown sugar 1/2 teaspoon ground nutmeg 1/4 cup butter, melted 2 3/4 cups whipping cream 4 cups cubed French bread 3/4 cup raisins Vanilla Sauce Preparation Combine first 4 ingredients; stir in butter and whipping creamGently stir in bread and raisinsPour into a lightly greased 2-quart soufflé or deep baking dishBake at 375° for 50 to 55 minutes, shielding with aluminum foil after 30 minutes to prevent excessive browningLet pudding stand 10 minutes before serving warm with Vanilla Sauce Yield 6 to 8 servings Southern Living, JANUARY 1997 -.
Aluminum chloride probably mostly dissociated to AlCl3·6H2O (aluminum hexahydrate)Aluminum is less electronegative than copper, which means its easier for it to share an electron with chlorineWhen you put the can in the water, the chlorine ions began stripping the aluminum atoms off, leaving the copper with nowhere to go except to precipitateBecause they aren't that different however, it is a very slow process as you noted.
Aluminum chloride probably mostly dissociated to AlCl3·6H2O (aluminum hexahydrate)Aluminum is less electronegative than copper, which means its easier for it to share an electron with chlorineWhen you put the can in the water, the chlorine ions began stripping the aluminum atoms off, leaving the copper with nowhere to go except to precipitateBecause they aren't that different however, it is a very slow process as you noted.
Bread Pudding with Vanilla SauceSouthern Living FREE TRIAL - Recipes More!Rating: Read Reviews Rate and Review Print: Full page | 3x5 | 4x6 Send: E-mail | IM Add to Saved Recipes Add to Saved Menus Add to Shopping List Add a Note Ingredients 3 large eggs, lightly beaten 1 1/2 cups sugar 2 tablespoons light brown sugar 1/2 teaspoon ground nutmeg 1/4 cup butter, melted 2 3/4 cups whipping cream 4 cups cubed French bread 3/4 cup raisins Vanilla Sauce Preparation Combine first 4 ingredients; stir in butter and whipping creamGently stir in bread and raisinsPour into a lightly greased 2-quart soufflé or deep baking dishBake at 375° for 50 to 55 minutes, shielding with aluminum foil after 30 minutes to prevent excessive browningLet pudding stand 10 minutes before serving warm with Vanilla Sauce Yield 6 to 8 servings Southern Living, JANUARY 1997 -.

Share to: