- #1
RoboNerd
- 410
- 11
Hi everyone!
So I have ZnBr2 and CdCl2, and I am asked to choose the most acidic one.
Firstly, I do not understand why both salts are acidic...
If my ZnBr2 undergoes hydrolisis, the reaction is ZnBr2 + 2H2O <------> Zn(OH)2 + 2HBr.
This would mean that this is acidic as the HBr dissociates completely.I was told that there is something about the size tend about the atoms.
However, I do not understand how the size of the Zn or Cd matters in determining the acidity as the atoms will end up with the hydroxides as a base in the reaction...
Please explain to me why one salt is more acidic than the other, and please explain why the size trend matters in this instance.
I know that if I have an H-X acid, then the size of the X atom determines the acidity [the larger it gets, the weaker the bond, the more acidic]. However, my Zn and Cd are not attached in this instance.
Thanks in advance.
So I have ZnBr2 and CdCl2, and I am asked to choose the most acidic one.
Firstly, I do not understand why both salts are acidic...
If my ZnBr2 undergoes hydrolisis, the reaction is ZnBr2 + 2H2O <------> Zn(OH)2 + 2HBr.
This would mean that this is acidic as the HBr dissociates completely.I was told that there is something about the size tend about the atoms.
However, I do not understand how the size of the Zn or Cd matters in determining the acidity as the atoms will end up with the hydroxides as a base in the reaction...
Please explain to me why one salt is more acidic than the other, and please explain why the size trend matters in this instance.
I know that if I have an H-X acid, then the size of the X atom determines the acidity [the larger it gets, the weaker the bond, the more acidic]. However, my Zn and Cd are not attached in this instance.
Thanks in advance.