Question

200cm3 of NH3 completely decomposes to N2
and H2 . The volume of the reaction mixture
under same conditions of temperature and
pressure would be
A) 200cm3 B) 600cm3 C) 400cm3 D) 500cm
​

Answer 1

Answer:

400cm^3

Explanation:

2 moles of nh3 = 200cm3

1 mole of nh3=100cm3

2nh3 gives n2 + 3h2

total moles of gas is 4

1 mole of gas at stp is 100cm3

4 mole of gas at stp is 400cm3