Question

Hydrazine (N₂H₄) is often used as a rocket fuel. It can be produced from the elements by reacting nitrogen gas (N₂) with another substance. What is the correct amount of the substance that would react with nitrogen gas to form one mole of hydrazine?

a) H₂

b) 2 H₂

c) 2NH₂O

d) 4NH₃

Answer 1

One mole of elemental nitrogen reacts with two moles of elemental hydrogen to produce one mole of hydrazine, therefore the correct substance amount is 2 moles of hydrogen (H2).

Step-by-step explanation:

The correct amount of the substance that would react with nitrogen gas (N2) to form one mole of hydrazine (N2H4) is 2 moles of hydrogen (H2). This is based on the chemical equation for the synthesis of anhydrous hydrazine:

N2(g) + 2H2(g) → N2H4(l)

From the equation, it is clear that one mole of elemental nitrogen reacts with two moles of elemental hydrogen to produce one mole of hydrazine. Therefore, the correct answer is (b) 2 H2.