How do you balance this equation?

Question

The assignment is to predict the hydrolysis reaction equation for the following salt: Al(NO3)3
and this is what I came up with:
Al(NO3)3 + H2O --> Al(OH)3 + HNO3
is this correct and if so how do you balance this equation?
Thank you!

Answer 1

You're off to a good start, with products and reactants. But the equation needs balance. The primary rule is: unless the equation is a "redox" type, the various ions and groups are maintained.
You may notice you have 3 nitrates on the left and only one on the right. Since the nitrate has to be maintained, you need 3 moles of HNO3 for every 1 of Al(NO3)3. Now you come to the problem of balancing out water against hydrogen and hydroxide. If the right side is correct, I need 6 hydrogens (3 for the aluminum hydroxide and three for thehydrogen in HNO3), and 3 oxygens.
Since water is H2O, this seems to work nicely. So we can write
Al(NO3)3 + 3H2O -> Al(OH)3 + 3 HNO3

Answer 2

Al(NO3)3+3H2O --> Al(OH)3+ 3HNO3

make a chart comparing the chemicals before and after the arrow, and then make changes to the side of the equation that needs to be changed.

example: before_____ After
Al/ 1--------------1
N/ 3 ------------1
O/ 10 -----------9
H / 2 ----------- 4

Answer 3

Al(NO3)3 + 3H2O --> Al(OH)3 + 3HNO3

Answer 4

try this link for this question and for further reference....
http://www.cs.utexas.edu/users/kbarker/halo/finalanswers.html