Answer to Question #196903 in Chemistry for roshana

Question

• How many moles of H2O are produced if 0.176 mol of O2 are used?

Answer 1

Solution:

The solution depends on the reaction!!!

However, the solution approach remains the same.

Several options can be given:

1)

Balanced chemical equation:

4NH₃ + 5O₂ → 6H₂O + 4NO

According to the equation above: n(O₂)/5 = n(H₂O)/6

Thus,

n(H₂O) = 6 × n(O₂) / 5 = (6 × 0.176 mol) / 5 = 0.211 mol

Moles of H₂O = 0.211 mol

2)

Balanced chemical equation:

2H₂ + O₂ → 2H₂O

According to the equation above: n(O₂) = n(H₂O)/2

Thus,

n(H₂O) = 2 × n(O₂) = 2 × 0.176 mol = 0.352 mol

Moles of H₂O = 0.352 mol