Question

3. Hydrogen reacts with nitrogen to produce ammonia according to the equation:

3H2(g) + N2(g)  2NH3(g)

Determine how much ammonia would be produced if 100g of N2 reacts?​

Answer 1

Mass of ammonia produced : 121.38 g

Further explanation

Given

Reaction

3H₂(g) + N₂(g) ⇒ 2NH₃(g)

100g of N₂

Required

Ammonia produced

Solution

mol of N₂ :

$\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{100}{28}\\\\mol=3.57$

From the equation, mol ratio of N₂ and NH₃ = 1 : 2, so mol NH₃ :

$\tt \dfrac{2}{1}\times 3.57=7.14~moles$

mass of NH₃(MW=17 g/mol) :

$\tt mass=mol\times MW\\\\mass=7.14\times 17\\\\mass=121.38~g$