• Support PF! Buy your school textbooks, materials and every day products Here!

Stochiometry Question

  • Thread starter SCGirl
  • Start date
  • #1
3
0
A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2Li + F2 --> 2LiF. After the reaction is complete, what will be present?
I think I start by dividing 15 g by the molar masses, but is the molar mass
2 x amu of Li and 2 x amu of F?
Thanks
 

Answers and Replies

  • #2
help is hereeeee.....

i think you have to first find out what the limiting reactant is. and then use that amount to see how much lithium fluoride forms.
hope this helps :biggrin:
 
  • #3
Gokul43201
Staff Emeritus
Science Advisor
Gold Member
7,051
16
A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2Li + F2 --> 2LiF. After the reaction is complete, what will be present?
I think I start by dividing 15 g by the molar masses, but is the molar mass
2 x amu of Li and 2 x amu of F?
Thanks
Correct for fluorine, because it is made up of diatomic molecules (hence, F2), but not lithium, which is monoatomic.

PS: From the next time on, such questions should be posted under the Homework & Coursework forums found near the top of the main page.
 

Related Threads for: Stochiometry Question

  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
6
Views
2K
Top