Question

How many grams of H2 gas are produced if 48
grams of CH4 gas are consumed?

Answer 1

Mass = 12.12 g

Step-by-step explanation:

Given data:

Mass of CH₄ = 48 g

Mass of H₂ produced = ?

Solution:

Chemical equation:

CH₄ → C + 2H₂

Number of moles of CH₄:

Number of moles = mass/molar mass

Number of moles = 48 g/ 16 g/mol

Number of moles = 3 mol

Now we will compare the moles of CH₄ and H₂.

CH₄ : H₂

1 : 2

3 : 2/1×3 = 6 mol

Mass of H₂:

Mass = number of moles × molar mass

Mass = 6 mol × 2.02 g/mol

Mass = 12.12 g