Saturday, December 3, 2011

Compound Names and Formulas

Naming Compounds is fairly easy when Mr. Ludwig gives you a handy dandy chart to look off of. Basically, all you have to do is find the formula and match it with the name.
For example:
NaF
Na= Sodium
F=Flourine
So the compound name is Sodium Flouride. (ions end in -ide)

Things can soon get more complicated like with the compound
Mn(NO3)3
The outside 3, goes to the top of the Mn, so it's Mn3. Mn3 = Manganese(II)
The only formula left is NO3 which is Phophate.
This equation is Manganese(II) Phosphate.

Now, when turning names into formulas the same rule applies: LOOK AT THE CHART!
The name potassium flouride is easily turned into KF after looking at the chart, but the names can get more difficult. When looking at Ammonium Sulfate, we see that they charge of the ions don't equal. Ammonium is NH4+, while sulfate is SO4^2. The positive 2 charge is moved over to the ammonium in order for the equations to equal out. This turns the equation into (NH4)2SO4.
These basic principles continue to apply as we went through the 24 problems on the paper.

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