F.1 textbook exercise

Moderators: Chem_Mod, Chem_Admin

Dylan Mai 1D
Posts: 70
Joined: Sat Jul 22, 2017 3:00 am

F.1 textbook exercise

Postby Dylan Mai 1D » Tue Oct 03, 2017 11:37 am

For F.1 we are given the molecular structure for Citral and we need to write the molecular formula from that. Is this something we need to know for the test friday and how do we do this question if so? Thank you!

Dylan Mai 1D
Posts: 70
Joined: Sat Jul 22, 2017 3:00 am

Re: F.1 textbook exercise

Postby Dylan Mai 1D » Tue Oct 03, 2017 11:42 am

Oh i see that we would just count the number of each element that appears in the molecular structure but how do we know the order of the elements in the formula? How do we know it is C10H16O instead of OH16C10? Thanks!

Janine Chan 2K
Posts: 71
Joined: Fri Sep 29, 2017 7:04 am

Re: F.1 textbook exercise

Postby Janine Chan 2K » Tue Oct 03, 2017 1:41 pm

If the compound includes carbon atoms, C will be written first. If it includes hydrogen atoms, H will come second. Any other elements should follow in alphabetical order. Hope that helps!

Andrea ORiordan 1L
Posts: 52
Joined: Fri Sep 29, 2017 7:04 am
Been upvoted: 2 times

Re: F.1 textbook exercise

Postby Andrea ORiordan 1L » Tue Oct 03, 2017 4:54 pm

For this upcoming test, we do not need to know how to write chemical formulas from their names (i.e. Nitric Acid is HNO3)- both the name of the compound and the formula (or just the formula) will be given to us. Dr. Lavelle said we would go over this in class at some point.


Return to “Empirical & Molecular Formulas”

Who is online

Users browsing this forum: No registered users and 1 guest