A mixture of `NH_3 (g)` and `N_2H_4 (g)` is placed in a sealed container at 300 K. The pressure within the container is 0.6 atm. When the container is heated to 1000 K where the two gases undergo decomposition reactions `2NH_3(g)rarrN_2(g)+3H_2(g) and N_2H_4(g)rarrN_2(g)+2H_2(g)` The pressure of the container now becomes 4.8 atm. The mole percent of `NH_3(g)` in the original mixture was

Options

A. 40
B. 50
C. 60
D. 70

Answer

C