Question

what volume of hydrogen will be produced if 100cm3 of ammonia is completely decomposed at constant temperature and pressure.

Answer 1

2NH3 ==> N2 + 3H2

When working with gases one can use volume directly as mols and not go through the conversion step of mols = L/22.4.

100 cc NH3 x (3 mols H2/2 mols NH3) = 100 x 3/2 = ? cc H2

Answer 2

p V = n R T

p/RT = n/V = constant here

n of H2/V of H2 = n of NH3/V of NH3

V of H2 = (n of H2/ n of NH3)100 cm^3

for every 2 mols of NH3 you get 3 mols of H2
so
n of H2/n of NH3 = 1.5
so

V = 1.5 * 100 = 150 cm^3

Answer 3

Law

Answer 4

Good

Answer 5

Wow am flabbergasted

Answer 6

pretty good