chemistry help 21-2

Question

In the balanced chemical equation below, how many moles of copper(II) carbonate are made from the reaction of 36 grams of copper(II) sulfate and excess silver carbonate?

 

CuSO₄ + Ag₂CO₃ --> Ag₂SO₄ + CuCO₃

Answer 1

Hello, Molly,

Calculate the moles of CuSO₄ in 36 grams of the stuff. It's molar mass is 159.6 g/mole, so we have 46g/(159.6 g/mole) or 0.226 moles CuSO₄. The equation promises us 1 mole of CuCO₃ for every 1 mole CuSO₄.

So we'd expect 0.226 moles of CuCO₃.

Bob