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-   -   Why is NH3 a base in water? (http://chemistryhelpforum.com/showthread.php?t=146372)

ktmed Jun 29th 2017 08:01 PM

Why is NH3 a base in water?
 
The reaction of NH3 +H2O --> NH4 +OH. Since NH4 accepted a proton from water, it's a Bronsted Lowry base and and becomes a conjugate acid which is weak.
I'm confused why did H20 in this case act as an acid and NH3 acts as a base, can someone please explain?

Muzzaza Jun 29th 2017 10:45 PM

Depending on reagents present, water can be seen as both a base and an acid.
Its a phenomena called amphoterism.
NH3 is generally seen as a base.
So in the case of an arbitrary acid, water would react as a base.

Worldofchemicals Jul 26th 2017 12:46 AM

Why is NH3 a base in water?
 
Ammonia is considered as a weak base because it doesn't contain any hydroxide ions, which indeed reacts with water to produce ammonium ions and hydroxide ions.


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