What is the theoretical yield of H₂O that can be obtained from the reaction of 4.5 g H₂ and excess O₂
2H₂(g) + O₂(g) $\rarr$ 2H₂O(g)

Question

What is the theoretical yield of H₂O that can be obtained from the reaction of 4.5 g H₂ and excess O₂ 2H₂(g) + O₂(g) $\rarr$ 2H₂O(g) A) 4.5 g B) 9.0 g C) 40. g D) 80. g E) 81 g

Quizplus · Accepted Answer

The molar mass of H₂ is 2 g/mol, so 4.5 g of H₂ is 2.25 moles. According to the balanced equation, 2 moles of H₂ produce 2 moles of H₂O. Therefore, 2.25 moles of H₂ will produce 2.25 moles of H₂O. The molar mass of H₂O is 18 g/mol, so 2.25 moles of H₂O is 40.5 g, which rounds to 40 g.

What Is the Theoretical Yield of H2O That Can Be →\rarr→

What Is the Theoretical Yield of H₂O That Can Be $\rarr$