My textbook states that I can deduce the type of acid used to make a salt by analysing its negative ions.

 

Calcium Chloride - CaCl2-----Ca-base ion Cl2-acid ion

 

so you know that by

 

CaO + HCL --> CaCl2 + H2O

 

Then I saw the following:

 

Ammonium sulphate - (NH4)2 S04-----(NH4)-base ion SO4-acid ion

 

2NH3 + H2O + H2SO4 --> (NH4)2 SO4 +H2O

 

Um...is the 2NH3 dissolved in H2O to give NH3 (aq) [aqueous ammonia] and then added to H2SO4 for neutralisation? I mean, the 2NH3 + H2O is actually mere dissolving but not neutralisation, right?

 

Sorry, guys, I don't know how to write subscripts on the forum....so it is rather hard to see what I am writing.

 

Thanks,

Anthropos

the NH3(g) + H2O(l) "react" to make NH4OH(l) (ammonium Hyroxide)

oh...i see...thanks...^^

Sorry, guys, I don't know how to write subscripts on the forum....so it is rather hard to see what I am writing.

Ya, YT, can you teach us? i don't know either.

LOL, ever seen me use them either?

Ok. Thanks to Dave's quick latex tutorial thread, I get it.

[Math] NH_3 [/Math]

http://www.scienceforums.net/forums/showthread.php?t=4236&highlight=latex

Oh...great!!! Thx, primarygun!

Ya for subscripts you can either use latex OR use the subscript bb code...

 

MnO[sub*]2[/sub] without the * gives MnO₂.

 

Superscripts can be done this way too...

 

SO₄[*sup]2+[/sup] without the * gives SO₄²⁺

oh...ok...thx...