Sunday, October 24, 2010

Hydrate Lab!

Today in class...

We started off by going over the quiz on Mole Conversions. For the rest of the class though, we did the Formula of a Hydrate Lab.

We started off by finding the mass of the empty test tube (to subtract it from the other masses later) and then the mass of the hydrate inside of the test tube

Next, we placed the test tube in the stand to heat it.

Then we began to heat the hydrate by using the Bunsen burner...

The blue hydrate eventually turned white, and it lost all of the water within it, the water left over towards the end of the tube can be seen below...


This new anhydrous salt was left, and we then had to find it's mass.


In the post lab, you should be able to use these masses to find moles of water lost during heating, the percent of water in the hydrate, the moles of anhydrous salt, and the ratio of moles of water lost per moles of anhydrous salt.

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