× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
t
7
m
6
k
6
F
5
j
5
t
5
j
5
G
5
f
5
a
5
d
5
c
5
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
tomatothefly tomatothefly
wrote...
Posts: 27
Rep: 0 0
11 years ago
For example... say I have CuCl2
when i put these into a net ionic equation it turns into Cu^2+(aq)+2Cl^-(aq)
I don't understand how you're supposed to freely transition the subscript to the coefficient? I mean aren
t they two different things that can't be changed that freely? Isn't a coefficient the number of that molecule while subscript is the number of atoms in it? How does this happen?
Read 625 times
2 Replies

Related Topics

Replies
wrote...
#1
11 years ago
i shall say an example. cu+ cl = cucl2
here b4 reaction, only one cl is there. but after reaction cl2 is formed. but by the law of mass we know that the amount of cl should be equal.cl2 has 2 cl atoms whereas cl has only one. so to adjust it we put 2cl ie 2*cl atom= two cl atoms.hope i helped
wrote...
#2
11 years ago
The solid in this case consists of 3 ions,1 Cu2+  and 2 x Cl-, the coefficient tells you how many ions of that type there are.
Some examples MgSO4 will dissociate to Mg^2+  and  SO4^2-
Look at AlCl3 - This will change to Al3+  +     3Cl-
Take Na2SO4 - this will give you  2Na+  +     SO4^2-
and finally Na3PO4 - will give 3Na+   +     PO4^3-
Hope this will help.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1000 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 268
  
 339
  
 273