Top Posters
Since Sunday
y
2
m
2
m
2
u
2
m
2
B
2
M
2
e
2
k
2
N
2
y
2
m
2
This topic contains 2 attachments.
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
Whelan Whelan
wrote...
Go to Answer
Posts: 3158
Rep: 40 1
9 years ago
Calculate the energy change for the formation of CaF2(s) from its elements in their standard states and the following information:

   Ca(s) + F2(g) → CaF2(s)   ?
   Ca(s) → Ca(g)   +179.3 kJ/mol
   Ca(g) → Ca+(g) + e-   +589.9 kJ/mol
   Ca+(g) → Ca2+(g) + e-   +1145 kJ/mol
   1/2 F2(g) → F(g)   +79.0 kJ/mol
   F(g) + e- → F-(g)    -328.0 kJ/mol
   CaF2(s) → Ca2+(g) + 2 F-(g)   +2630 kJ/mol

A) +4046 kJ/mol
B) -965 kJ/mol
C) -1214 kJ/mol
D) -3286 kJ/mol
Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
Author:
Read 1492 times
9 Replies
Replies
Answer verified by a subject expert
hbutler2hbutler2
wrote...
#1
Top Poster
Posts: 3076
Rep: 889 1
9 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
 Attached file(s) 
Thumbnail(s):
You must login or register to gain access to these attachments.
I'm a chemical engineer! Slight Smile

Related Topics

wrote...
#2
4 years ago
thank you
wrote...
#3
4 years ago
thank you
wrote...
#4
4 years ago
thank you
wrote...
#5
4 years ago
thank you
wrote...
#6
4 years ago
thank you
wrote...
#7
4 years ago
thank you
wrote...
#8
3 years ago
Thanks
wrote...
#9
3 years ago
Thank you!!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  501 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 319
  
 1202
  
 327