Question

10. How many molecules of NH, could you make with 15 molecules of H2 and 4 molecules of Nz? What is

your limiting reactant? Which reactant is in excess?
15 molecules H2X
molecules NH
molecules H2
4 molecules N2 x
molecules NH3
molecules N2
Amount of NH, made:
Limiting reactant:
Excess reactant:

Answer 1

Limiting reactant : N₂

Excess reactant : H₂

amount of NH₃ : 8 molecules

Further explanation

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

`\tt N_2+3H_2\rightarrow 2NH_3`

limiting reactant = smaller mol ratio

• N₂

`\tt (4)/(1)=4`

• H₂

`\tt (15)/(3)=5`

limiting reactant ⇒ N₂

The number of reacted H₂ molecules :

`\tt (3)/(1)* 4=12`

The remaining H₂ after the reaction :

`\tt 15-12=3~molecules`

Amount of NH₃ :

`\tt (2)/(1)* 4=8~molecules`