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CBSE Class 11-science Answered

please kindly explain the quickest possible method to solve this question....
Asked by araima2001 | 29 Jul, 2016, 07:02: PM
answered-by-expert Expert Answer
The correct option is 2 atm.
The given reaction is 2NH3 → N2 + 3H2 
For NH3 : P = 1 atm, V = 1 litre, T = 298 K
T h e r e f o r e space m o l e s space o f space N H subscript 3 space equals space fraction numerator P V over denominator R T end fraction space equals space fraction numerator 1 x 1 over denominator 0.0821 x 298 end fraction
S i n c e space 2 space m o l e s space o f space N H subscript 3 space a r e space u s e d space a n d space space 4 space m o l e s space o f space N subscript 2 space a n d space H subscript 2 space a r e space f o r m e d
S o space a t space s a m e space T space a n d space V comma space P space alpha space n
P subscript 1 over P subscript 2 space equals space n subscript 1 over n subscript 2 space o r space 1 over P space equals space 2 over 4
P r e s s u r e space a f t e r space r e a c t i o n space equals space 2 space a t m
Answered by Prachi Sawant | 01 Aug, 2016, 01:09: PM
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