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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: edward-elric on December 22, 2014, 03:53:16 PM

Title: 2 questions about barium peroxide
Post by: edward-elric on December 22, 2014, 03:53:16 PM

Hello!!,
I have a doubt with the synthesis of peroxide barium, I see that you need (for example): BaCl2 + H2O2, but everyone do it with a solution that contains also NH3, why?
This is my question, why you need NH3 to synthesise BaO2?

my other question is: why a solution of BaO2 with H2O is basic?

Title: Re: 2 questions about barium peroxide
Post by: Hunter2 on December 22, 2014, 06:27:29 PM

First question: If you add only barium chloride and hydrogenperoxide, what are the results. Develop the equation. What will the ammonia do if you add it?

Second question: What is the general behaviour of Oxides of the elements of the second group, if dissolved in water.

Title: Re: 2 questions about barium peroxide
Post by: edward-elric on December 23, 2014, 07:10:22 AM

First:
BaCl₂ + H₂O₂ = 2HCl + BaO₂
If you add ammonia, it neutralize hydrochloric acid doing ammonium. But, because they neutralize the medium, for what?

Second:
general behaviour: BaO + H2O = Ba(OH)₂
BaO₂ + H₂O = Ba(OH)₂ (but this isn't ajusted)


Edited by edward-elric  to fix subscript notation

Title: Re: 2 questions about barium peroxide
Post by: billnotgatez on December 23, 2014, 07:28:34 AM

@edward-elric
you appear to have some typos
maybe due to not using the subscript notation available in the posting window

Some links
http://en.wikipedia.org/wiki/Barium_hydroxide
http://en.wikipedia.org/wiki/Barium_hydroxide#Preparation
http://en.wikipedia.org/wiki/Barium_oxide
http://en.wikipedia.org/wiki/Barium_peroxide
http://en.wikipedia.org/wiki/Barium_chloride

Title: Re: 2 questions about barium peroxide
Post by: edward-elric on December 23, 2014, 07:52:36 AM

sorry I had not realized  :-[