acid dissociation Q (1 Viewer)

[vds700]

Does sulfuric acid dissociate in solution to form 2 hydrogen ions per acid molecule or 1?




 

[cwag]

H₂SO₄ --> 2H⁺ + SO₄^2-

so 2 moles of H⁺ per 1 mole of H₂SO₄

 

[independantz]

I was under the impression that acids don't dissociate the ionise?, so doesn't it actually form 2 hydronium ions?

 

[minijumbuk]

Yes, but it's commonly expressed as H+ ions.

However, H+ ions don't actually exist on their own.

 

[vds700]

thanks guys

 

[beentherdunthat]

Yes, but it's commonly expressed as H+ ions.

However, H+ ions don't actually exist on their own.

Yeah sometimes you need h3o+ to balance equations.

IT's expressed as h3o+ ions becuase the h+ ions are so reactive that it readily reacts with water { whether you like it or not } such that h20 + h+ = h30+

 

[xiao1985]

Yes, acids ionises. Also, they ionises step-wise. First step of ionisation:

H2SO4 + H2O ---> H3O+ + HSO4 - is an (almost) complete ionisation process. The second step is an incomplete one. Though for the purpose of the HSC, it can be assumed that H2SO4 will ionise two water molecules to H3O + per molecule of H2SO4.