Acids and bases Watch

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r0manticide17
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#1
Report Thread starter 13 years ago
#1
Why is Sodium hydroxide a base when reacted with sulphuric acid?

Confused! HELP!
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princessmarisa
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#2
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Isn't sodium hydroxide (NaOH) always a base because it has OH in it?
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Eye
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#3
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Surely its because the OH- ion is accepting a proton.
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idiopathic
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#4
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(Original post by Blobga)
Surely its because the OH- ion is accepting a proton.
Yep, that's the (Bronsted-Lowry) definition of a base.

(Original post by marisad_uk)
Isn't sodium hydroxide (NaOH) always a base because it has OH in it?
No, that's not really a rule.
For example, HSO_4^- can behave as a base (and as an acid), and doesn't have an OH:
HSO_4^- \ \rightarrow \ H^+ \ + \ SO_4^{2-}
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princessmarisa
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#5
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but are there any substances with OH in them which aren't bases, i didnt mean it HAS to have OH to be a base, just that most (if not all substances) with OH are bases.
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Yilin510
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sodium hydroxide can gives OH- ion so it acts as a base while sulphuric acid can provide H+ ion, it acts as an acid, these two ions combine together and form water, so that is the basic acid-base neutralization to give off water.
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charco
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#7
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sulphuric acid has OH in it and it certainly isn't a base, so does phosphoric acid and nitric acid in fact all the oxy-acids have the O-H group

and as for alcohols...
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