Question

How many grams of iron (Fe) would be needed to generate 5.25 g of hydrogen gas (H2)?

Answer 1

Considering the given reaction, 109 g of Fe are needed to generate 5.25 g of H₂.

What is stoichiometry?

Stoichiometry refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions.

• Step 1: Write the balanced equation.

3 Fe + 4 H₂O ⇒ 4 H₂ + Fe₃O₄

• Step 2: Calculate the mass of Fe needed to produce 5.25 g of H₂.

We will consider the following relationships.

1. The molar mass of Fe is 55.85 g/mol.
2. The molar ratio of Fe to H₂ is 3:4.
3. The molar mass of H₂ is 2.02 g/mol.

$5.25gH_2 \times \frac{1molH_2}{2.02gH_2} \times\frac{3molFe}{4molH_2} \times\frac{55.85gFe}{1molFe} = 109gFe$

Considering the given reaction, 109 g of Fe are needed to generate 5.25 g of H₂.

Learn more about stoichiometry here: brainly.com/question/16060223