Answer to Question #173137 in Chemistry for jacob n Alviola

Question

What are the mole ratio and the mass ratio for H2O to O2 in the reaction 2H2 + O2 → 2H2O?

Answer 1

Mole ratio of H₂O to O₂ in the given reaction is H₂O : O₂ = 2 : 1.

n = m/M

m = n x M

M (H₂O) = 18 g/mol

M (O₂) = 32 g/mol

m (H₂O) = 2 x 18 = 36 g

m (O₂) = 1 x 32 =32 g

Mass ratio of H₂O to O₂ in the given reaction is H₂O : O₂ = 36 : 32 = 1 : 1.1.