Naming Compounds

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Lasya Gudipudi 1A
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Joined: Fri Sep 28, 2018 12:15 am

Naming Compounds

Postby Lasya Gudipudi 1A » Sat Oct 06, 2018 5:12 pm

On the homework for E.9 on the sixth edition, there was a compound called magnesium sulfate heptahydrate, which is MgSO4, but they didn't provide the actual formula. For the first test, do we have to know how to name compounds? If so, how do we do that?

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Joined: Fri Sep 28, 2018 12:26 am

Re: Naming Compounds

Postby harshitasarambale4I » Sat Oct 06, 2018 5:34 pm

Magnesium sulfate heptahydrate, is actually MgSO4.7H2O
The raised dot separates the water of hydration. This compound contains a hydrate so in this form, magnesium sulfate heptahydrate exists as a crystal. But when this compound is heated, the water of hydration is lost and the crystals are lost.
I think we will have to know how to name compounds because a lot of homework questions expected that.

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Re: Naming Compounds

Postby JulieAljamal1E » Sat Oct 06, 2018 5:44 pm

Fundamentals D touches on naming compounds, so that could be helpful to review prior to the test. However I think we will be given the formulas for the compounds on this first test.

Alicia Gibbons 1B
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Joined: Fri Sep 28, 2018 12:17 am

Re: Naming Compounds

Postby Alicia Gibbons 1B » Sat Oct 06, 2018 6:20 pm

When a formula has ---hydrate, the prefix represents the amount of H2O molecules present. So heptahydrate would be 7 H2O, trihydrate would be 3 H2O, and so forth. These are connected to the chemical formula with a dot.

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