Knowing the names of molecules
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 104
- Joined: Wed Sep 30, 2020 9:36 pm
Knowing the names of molecules
Hello, I was just wondering if we are asked to balance a chemical reaction and the product is given in the form of a name such as iron(III) oxide, are we still going to be provided with the chemical formula as well , or do we have to know what the chemical formula is? And if not, how would I go about determining the formula of this oxide in particular?
-
- Posts: 108
- Joined: Wed Sep 30, 2020 9:48 pm
- Been upvoted: 3 times
Re: Knowing the names of molecules
For a compound like this, you could most likely figure out the formula by looking at the name. Iron (III) indicates that the iron has a charge of +3 and oxygen is usually charged at -2, so the formula for this particular iron oxide would be Fe2O3. However, I'm not sure if we will have to figure out more complicated molecules (i.e. ethylenediamine (aka "en") or ethylenediaminetetraacetate (aka "edta") ) or if we will be given their formulas
-
- Posts: 57
- Joined: Fri Sep 24, 2021 5:38 am
Re: Knowing the names of molecules
Hi Bronson,
I think for chem 14A, all the chemical formulas will be given in the question!
I think for chem 14A, all the chemical formulas will be given in the question!
-
- Posts: 99
- Joined: Fri Sep 24, 2021 6:20 am
Re: Knowing the names of molecules
Hi! I believe that in 14A we will be given the chemical equations to balance however I did notice that some book questions require we determine the chemical equation for ourselves before balancing, so it may be helpful to just do a quick review via Youtube or I am sure through our textbook!
-
- Posts: 109
- Joined: Fri Sep 24, 2021 5:07 am
- Been upvoted: 1 time
Re: Knowing the names of molecules
I don't think that the formula of compounds/molecules will always be provided. More specifically, there are polyatomic ions that I'm guessing we will have to have memorized—nitrate, sulfate, phosphate, etc. In the case of Iron (III) oxide, this means that the compound has iron and oxygen. The (III) refers to the charge of the iron. Therefore, iron has a charge of three. Oxygen has a charge of -2, so therefore, the compound would be Fe2O3.
Return to “Balancing Chemical Reactions”
Who is online
Users browsing this forum: No registered users and 7 guests