What mass of h2o will be produced if 9.5 g of h2 reacts with 1.2 g of o2?

Question

Chemistry

Aryan Buchanan

15 March, 12:32

What mass of h2o will be produced if 9.5 g of h2 reacts with 1.2 g of o2?

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Answers (1)

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Lisa · Answer 1

Answer is: mass of water is 1,35 grams.

Chemical reaction: 2H₂ + O₂ → 2H₂O.

m (H₂) = 9,5 g.

n (H₂) = m (H₂) : M (H₂).

n (H₂) = 9,5 g : 2 g/mol.

n (H₂) = 4,75 mol.

m (O₂) = 1,2 g.

n (O₂) = 1,2 g : 32 g/mol.

n (O₂) = 0,0375 mol; limiting reactant.

From chemical reaction: n (O₂) : n (H₂O) = 1 : 2.

n (H₂O) = 0,0375 mol · 2 = 0,075 mol.

m (H₂O) = 0,075 mol · 18 g/mol.

m (H₂O) = 1,35 g.