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A flask of capacity 1 litre contains NH3 at 1 atm and 25 degree celsius a spark is passed through until all the NH3 is is decoposed into N2 and H2 calculate the gaseous pressure left at 25 degree celsius

A flask of capacity 1 litre contains NH3 at 1 atm and 25 degree celsius a spark is passed through until all the NH3 is is decoposed into N2 and H2 calculate the gaseous pressure left at 25 degree celsius

Grade:11

1 Answers

Adarsh Pandey
19 Points
5 years ago
Since NH3 IS COMPLETELY DECOMPOSED SO
2NH3=N2+3H2
TOTAL GASEOUS MOLES AFTER DECOMPOSITION=.5*INITIAL NH3 MOLES +1.5*INITIAL NH3 MOLES.
INITIAL NH3 MOLES >PV=NRT
1*1=N*.0821*298
N=.0408
HENCE TOTAL GASEOUS MOLES AFTER
DECOMPOSITION=.0816
NOW WE HAVE GASEOUS MOLES.
AGAIN USE GAS EQUATION
SO
P=1.996

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