Question

How many moles of water are produced if 5.43 mol PbO2 are consumed? ANSWER: 10.9

Answer 1

Answer: 10.9 mol.

Explanation:

• To understand how to solve this problem, we must mention the reaction equation where water produced from PbO₂.

Pb + PbO₂ + 2H₂SO₄ → 2PbSO₄ + 2H₂O

• Now, it is a stichiometric oriented problem, that 1 mole of PbO₂ produces 2 moles of H₂O.

Using cross multiplication:

1.0 mole of PbO₂ → 2.0 moles of H₂O

5.43 moles of PbO₂ → ??? moles of water

The moles of water produced = (5.43 x 2.0) = 10.86 moles ≅ 10.9 moles.

Answer 2

Answer:

10.9

Explanation:

5.43 x $\frac{2}{1}$ = 10.86 which rounds to 10.9

just did it on edge :)