A mixture of NH_(3)( g) and N_(2) H_(4)(g) is placed in a sealed vessel at 27^(@)C . The total pressure of the gas is 0.5 atm. The vessel is heated to 927^(@)C where the following decomposition reaction take place : N_(2) H_(4) rarr N_(2)(g) + 2H_(2)(g) 2NH_(3)(g) rarr N_(2)(g) + 3H_(2) ( g) The pressure in the vessel at this stage becomes 4.5 atm. The mole percent of NH_(3)(g) in the original mixture was :

A mixture of NH_(3)( g) and N_(2) H_(4)(g) is placed in a sealed vesse

1.	A mixture of NH_(3)( g) and N_(2) H_(4)(g) is placed in a sealed vessel at 27^(@)C . The total pressure of the gas is 0.5 atm. The vessel is heated to 927^(@)C where the following decomposition reaction take place : N_(2) H_(4) rarr N_(2)(g) + 2H_(2)(g) 2NH_(3)(g) rarr N_(2)(g) + 3H_(2) ( g) The pressure in the vessel at this stage becomes 4.5 atm. The mole percent of NH_(3)(g) in the original mixture was :
Answer» 0.25 0.6 0.75 0.8 Answer :C