i have a two part chemistry question i need help with?
A chemist has aluminum oxide and causes it to decompose into aluminum and oxygen gas. Please write the balanced decomposition reaction. You will have to figure out the chemical formula of aluminum oxide.
Using your chemical reaction from #9, please calculate how many moles of aluminum are produced when 9.18 moles of oxygen are produced.
- pisgahchemistLv 73 weeks agoFavorite Answer
That's hilarious. I don't think any chemist causes aluminum oxide (Al2O3) to decompose into aluminum and oxygen gas.
That reaction is purely speculative and unlikely to happen. You can, of course, write the hypothetical reaction, but understand that it isn't going to happen.
2Al2O3(s) --magic occurs--> 4Al(s) + 3O2(g)
.............. .................. ............? mol.... 9.18 mol
9.18 mol O2 x (4 mol Al / 3 mol O2) = 12.2 mol Al
- 3 weeks ago
Aluminum oxide- basically aluminum + oxygen, that’s all.
Now, oxygen likes to form 2- charges (it has six valence electrons and wants to get to eight so it gains two) and aluminum likes to form a charge of 3+ (to lose three electrons) so, we get the formula of Al2O3 (for every two aluminums you get 3 oxygens to balance out the charges).
Since its decomposing,
Al2O3 —> 2Al (s) + 3O (g)
(To balance it just make sure you have the same number of each atom on both sides.)
9.18 moles of O * (2 moles of Al / 3 moles of O)
(I just used the ratio from the balanced chemical equation.)
That’s basically it, if you need help, look at Tyler Dewitt’s and The Organic Chemistry Tutor’s videos. They have some pretty dope stuff there. Hope I helped! 🏴
- JetDocLv 73 weeks ago
Do your own homework.