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sarah1004 · Nov 13, 2009, 11:40 PM

write the net ionic equations for the reactions which occurred when aqueous KOH was initially added to:

1)Al(NO3)3 : I think this one is souble equation.

2)Fe(NO3)3 : Fe^3+ + 3OH^- ----> Fe(OH)3

3)Ni(NO3)2 : I think this one is souble equation.

I think I am not exactly understand, so Could you please explain for me?

Thanks

Perito · Nov 14, 2009, 05:15 AM

All three of the reactions will produce hydroxides (Al(OH)3, Fe(OH)3, Ni(OH)2). The "net ionic equation" is simply an equation without the "spectator ions" being shown.

$Al^{3+} + 3 OH^- \rightarrow Al(OH)_3$

sarah1004 · Nov 15, 2009, 11:08 AM

I really don't understand so just number 1 answer is
$Al^{3+} + 3 OH^- \rightarrow Al(OH)_3$ [/QUOTE]

this?

I don't understand sorry,

sarah1004 · Nov 15, 2009, 02:56 PM

So,
these 3 quesetions answers are

$Al^{3+} + 3 OH^- \rightarrow Al(OH)_3$
$Fe^{3+} + 3 OH^- \rightarrow Fe(OH)_3$
$Ni^{2+} + 2 OH^- \rightarrow Ni(OH)_2$

Perito · Nov 15, 2009, 08:26 PM

Yup. That's it.