Top Posters
Since Sunday
G
4
K
3
m
2
c
2
r
2
p
2
s
2
s
2
b
2
c
2
R
2
c
2
New Topic  
Helen Kebede Helen Kebede
wrote...
Posts: 116
Rep: 2 0
2 months ago

Sand is converted to pure silicon in a three-step process. The final step in this process is as follows.

SiCl4(g) + 2Mg(s) → 2MgCl(s) + Si(s)     ΔH°rxn = 625.6 kJ/mol

What is the enthalpy change if 25.0 mol of silicon tetrachloride is converted to elemental silicon?

▸ –25.0 kJ

▸ –626 kJ

▸ –1.56 × l04 kJ

▸ –3.13 × 104 kJ

▸ –3.13 × 103 kJ
Textbook 
Chemistry: Atoms First

Chemistry: Atoms First


Edition: 4th
Author:
Read 26 times
1 Reply
Replies
Answer verified by a subject expert
SirangelouSirangelou
wrote...
Posts: 157
Rep: 0 0
2 months ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Helen Kebede Author
wrote...

2 months ago
Good timing, thanks!
wrote...

Yesterday
Thanks for your help!!
wrote...

2 hours ago
Just got PERFECT on my quiz
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  906 People Browsing
Related Images
  
 654
  
 184
  
 1757
Your Opinion
Who's your favorite biologist?
Votes: 587