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Chemistry 16 Online
OpenStudy (anonymous):

When HSO4- disassociates in water, it is a reversible reaction. Is it correct to say that "in this reaction HSO4- disassociates to H+ and SO4- and H+ and SO4- react to form HSO4-"

OpenStudy (chmvijay):

yes :)

OpenStudy (chmvijay):

HSO4−(aq) ⇌ SO42−(aq) + H+(aq)

OpenStudy (anonymous):

Yes, so it's fine if we say that to explain what's happening in the reaction?

OpenStudy (chmvijay):

bcoz HSO4 - is a weak acid compared to H2SO4

OpenStudy (chmvijay):

When H2SO4 is dissolved in water, the first proton is assumed 100% dissociated because H2SO4 is a strong acid. After H2SO4 dissociates, we have H+ and HSO4− present. HSO4 − is a weak acid and can donate some more protons to water

OpenStudy (chmvijay):

what do u mean by Bed potato @bedpotato LOL:)

OpenStudy (anonymous):

Like couch potato, but BED potato.

OpenStudy (chmvijay):

haaa haaaa LOL :) :P did u get the answer by the way

OpenStudy (anonymous):

Yes i did. Thanks.

OpenStudy (chmvijay):

yw :)

OpenStudy (anonymous):

Sulfuric acid is a diprotic meaning it can release 2 protons (H+ ions) when it ionises. So it undergoes disassociation in two steps: The first one: H2SO4(aq) + H2O(l) -----> H3O+(aq) + HSO4-(aq) In the above equation, it has released one of its H+ ions. However, since is releases two, you have the equation: (this is the second step) HSO4-(aq) + H2O(l) <-------> H3O+(aq) + SO4^2-(aq) In this equation it releases the other H+ ion. HSO4- will act as a weak acid in water and donate a proton. Since it's acting as a weak acid, it doesn't donate all of its protons (only partially disassociates). That's why the equation is reversible, HSO4- can disassociate to H+ and SO4- and H+ and SO4- can react to form HSO4-.

OpenStudy (chmvijay):

LOL what is this :) NOW

OpenStudy (chmvijay):

you knew answer lol

OpenStudy (anonymous):

I know. I wanted to make sure I was right.

OpenStudy (chmvijay):

haaa haaa now ur sure ????

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