Question

Use the equation

2Cu+O2-->2CuO

to find how many grams of copper (II) oxide would be formed from the complete reaction of .500 mol Cu.

Question options:

42.1


39.8


44.5


34.7

Answer 1

(Answer) 39.77 g of copper (II) oxide would be formed from the complete reaction of 0.500 mol Cu.

Moles of Cu reacted = 0.500 mol

According to the balanced chemical equation, the mole ratio of copper and copper (II) oxide = 1: 1

Therefore, 0.500 moles of copper (II) oxide would be formed from the complete reaction of 0.500 mol Cu.

Mass of 0.500 moles of copper (II) oxide = (Number of moles x molar mass)

= (0.500 x 79.545) g = 39.77 g.