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Topic: How do I get H2O and NaHSO4 from the reaction below?  (Read 2659 times)

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IBM

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How do I get H2O and NaHSO4 from the reaction below?
« on: September 08, 2018, 01:38:23 PM »
I have two questions from the equation below
NaOH + H2SO4 = NaHSO4 + H2O
1. How do I get H2O?
If I split NaOH, I get Na+ and OH-, OH- ion from NaOH and H+ ion from H2SO4 combine to form H2O?

2. Why Na+ combined to HSO4 to form NaHSO4 because H+ and SO4- combined to form a neutral compound so there is no need for an extra proton. So why Na+ is combined to HSO4? Could you please explain?

chenbeier

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Re: How do I get H2O and NaHSO4 from the reaction below?
« Reply #1 on: September 08, 2018, 02:45:48 PM »
You already figuerd out that you get OH- from NaOH and H+ from H2SO4 this will recombine to H2O

So Na+ is left and from H2SO4 there is still HSO4- left. This will get NaHSO4.

kavin011

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Re: How do I get H2O and NaHSO4 from the reaction below?
« Reply #2 on: September 08, 2018, 03:22:22 PM »
1) yes. 2) This reaction is called double displacement as well as neautralization reaction.double displacement reaction is switching the charges,in Na+OH- ,Na+ is combine with HSO4- and H+ is combine with OH-.

IBM

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Re: How do I get H2O and NaHSO4 from the reaction below?
« Reply #3 on: September 09, 2018, 01:09:14 AM »
You already figured out that you get OH- from NaOH and H+ from H2SO4 this will recombine to H2O

So Na+ is left and from H2SO4 there is still HSO4- left. This will get NaHSO4.
Do you You mean to say If I split H2SO4, we get 2H+ + SO4²⁻, and one H+ combined to form HSO4⁻. After that  Na+ from NaOH combined to HSO4⁻ and form a neutral compound NaHSO4 and OH- from NaOH combined to another H+ from H2SO4 to form H2O? Please let me clarify.

kavin011

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Re: How do I get H2O and NaHSO4 from the reaction below?
« Reply #4 on: September 09, 2018, 02:17:11 AM »
You can write H2SO4 as H & HSO4,this H+ ion is combine with OH- to form H2O and Na+ ion is combine with HSO4 to form NaHSO4.Mentioned 2 reactant is switched their charges with other reactant ,which is called double displacement reaction.

chenbeier

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Re: How do I get H2O and NaHSO4 from the reaction below?
« Reply #5 on: September 09, 2018, 06:29:17 AM »
You already figured out that you get OH- from NaOH and H+ from H2SO4 this will recombine to H2O

So Na+ is left and from H2SO4 there is still HSO4- left. This will get NaHSO4.
Do you You mean to say If I split H2SO4, we get 2H+ + SO4²⁻, and one H+ combined to form HSO4⁻. After that  Na+ from NaOH combined to HSO4⁻ and form a neutral compound NaHSO4 and OH- from NaOH combined to another H+ from H2SO4 to form H2O? Please let me clarify.

Sulfuric acid has two dissoziation reactions.

1. H2SO4 => H+ + HSO4-
2. HSO4- =>  H+ + SO42-

If you add NaOH the first reaction takes place. After the first H+ is neutralized, the second reaction takes place.

I your case there is not enough NaOH so you have only the first reaction.

IBM

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Re: How do I get H2O and NaHSO4 from the reaction below?
« Reply #6 on: September 10, 2018, 02:49:24 AM »
Thanks a lot.