A. How many grams of H2 gas are produced if 32
grams of CH4 gas are consumed?

Mass of H₂ produced = 12 g

Given

32 grams of CH₄

Required

mass of H₂

Solution

Reaction

CH₄ + H₂O (+ heat) → CO + 3H₂

mol CH₄(MW= 16 g/mol) :

= mass : MW

= 32 g : 16 g/mol

= 2

From the equation, mol ratio CH₄ :  H₂ = 1 : 3, so mol H₂ :

= 3/1 x mol CH₄

= 3/1 x 2

= 6

Mass H₂(MW = 2 g/mol) :

= mol x MW

= 6 x 2

= 12 g

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