Respuesta :
Answer:
Hydrogen is the limiting reagent.
Explanation:
Limiting Reagent : It is the substance that get consumed when the reaction complete. It is used to determine the what amount of product will be formed.
When [tex]H_{2}[/tex] and [tex]N_{2}[/tex] react, it will produce
[tex]NH_{3}[/tex] gas . The balance reaction can be written as:\
[tex]N_{2}(g) + 3H_{2}(g) \rightarrow 2NH_{3}(g)[/tex]
Here, 1 mol [tex]N_{2}[/tex] require 3 mol [tex]H_{2}[/tex]
In question ,
[tex]moles = \frac{given\ mass}{Molar\ mass} [/tex]
Molar mass of H2 = 2 g/mol , given mass = 5 g
[tex]moles\ of\ H_{2} = \frac{5}{2}[/tex]
[tex] H_{2}[/tex] = 2.5 mole
[tex]moles\ of\ N_{2} = \frac{28}{28}[/tex]
Molar mass of N2 = 28 g/mol , given mass = 28 g
[tex] N_{2}[/tex] = 1 mole
Since, 1 mole [tex]N_{2}[/tex] require 3 mole [tex]H_{2}[/tex]
But available , mole of [tex]H_{2}[/tex] = 2.5
So we need extra 0.5 moles of Hydrogen gas
Hence [tex]H_{2}[/tex] get consumed first , Thus Hydrogen is the limiting reagent
