Answer to Question #135962 in General Chemistry for Zeliha Senlik

Question

a reaction of 12.640g of copper oxide with 0.316g hydrogen produces 2.844g of water and x g of copper. x = ____ g

Answer 1

Question #135962

a reaction of 12.640g of copper oxide with 0.316g hydrogen produces 2.844g of water and x g of copper. x = ____ g

Answer

CuO _(s) +H_2(g) –> Cu_(s)+H₂O_(g)

Mol of CuO= 12.64/80=.0158

Mol of H₂ = 0.316/2=0.158

Mol of H₂O = 2.844/18= 0.158

Mol ratio of CuO: H₂: Cu: H₂O is 1:1:1:1

Mol of Cu = 1×0.158=0.158

Mass of Cu formed, X = 0.158×64

                                  = 10.112g