copper (II) chloride dihydrate and aluminum (placed into a calorimeter): ~The Co

ID: 924472 • Letter: C

Question

copper (II) chloride dihydrate and aluminum (placed into a calorimeter):

~The Copper (II) Chloride was a greean color, but when it came in contact with the water it turned blue

~When the aluminum was added to CuCl2 2H2O it turned into a darker color (red-brown ppt.)

~The reaction of the mixture also produced a steam, and increased the temprerature of calorimeter

~The end color wasn't completely blue, but a greenish-blue color.

3CuCl2 2H2O + 2Al 2 AlCl3 + 3Cu + 6H2O

is this the right chemical equation, and if so:

1. what would be the net ionic calanced thermochemical equation for the predominant chemical reaction that occurred.

2. Suppose that the final solution had been blue. What possibly could have gone wrong?

3CuCl2 2H2O + 2Al 2 AlCl3 + 3Cu + 6H2O

3Cu++6Cl- + 6H2O + 2Al ------> 2 Al++6Cl- + 3Cu + 6H2O ionic equation

3Cu+ + 2Al ------> 2 Al++ + 3Cu net ionic equstion

2. final solution colour is greenish blue not deep blue

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