Consider the reaction 2H2(g)+O2(g)→2H2O(l) What is the mass of water, H2O(l), produced when 5.20 g of...

Question

Question

Consider the reaction 2H2(g)+O2(g)→2H2O(l) What is the mass of water, H2O(l), produced when 5.20 g of O2(g) reacts with excess H2(g)? PLEASE HELP

Answer 1

Answer #1

2H₂ (g) + O₂ (g) 2H₂O (l)

Mole ratio of H₂ , O₂ and H₂O = 2 :1 :2

Molar mass of H₂O = 18 g/mol

Molar mass of H₂ = 2 g/mol

Molar mass of O₂ = 32 g/mol

So, 32 g O₂ gas reacts with excess H₂ to give 2×18 g H₂O.

Conversion factor =

then, 5.20 g O₂ gas reacts with excess H₂ (g) to give

5.20 (g) ×

= 5.85 g H₂O (l).

Answer 2

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