Question

Use the equation 2Cu+O2 —> 2CuO to find how many grams of copper react to form 3.64 mol CuO.

Answer 1

Answer:

231.31 g

Explanation:

We are given;

• The mass of CuO produced as 3.64 moles
• The equation fro the reaction as

2Cu+O2 → 2CuO

We are required to determine the mass of copper that would react.

• In this case, we are going to use the concept on mole ratio.

• From the balanced equation,

2 moles of Cu reacts with 1 mole of oxygen to yield 2 moles of CuO

• Therefore, the mole ratio of copper (Cu) to CuO is 2: 2 or 1 : 1 (simplified)
• Therefore;

Moles of Cu = moles of CuO

Thus, moles of Cu = 3.64 moles

But, Mass = Number of moles × atomic mass

Atomic mass of copper = 63.546

Thus,

Mass of Cu = 3.64 moles × 63.546 g/mol

                   = 231.31 g

Thus, 231.31 g of copper will react to produce 3.64 moles of CuO