Question

Какой объем кислорода понадобится для окисления 4г меди?

Answer 1

2Cu+O2=2CuO
n(Cu)=4/64=0.0625
V(O2)=0.0625*22.4/2=0.7(л) или (дм3)
Ответ:0.7л

Answer 2

Oxygen Volume Needed to Oxidize 4g of Copper

To calculate the volume of oxygen needed to oxidize 4g of copper, we can use the stoichiometry of the chemical reaction between copper and oxygen.

The balanced chemical equation for the oxidation of copper is:

2Cu + O2 → 2CuO

From the balanced equation, we can see that 1 mole of oxygen reacts with 2 moles of copper to form 2 moles of copper oxide.

Calculating the Volume of Oxygen Needed

1. Convert grams of copper to moles: - The molar mass of copper (Cu) is approximately 63.55 g/mol. - Using the molar mass, we can calculate the number of moles of copper in 4g.

2. Use stoichiometry to find moles of oxygen: - According to the balanced chemical equation, 1 mole of oxygen reacts with 2 moles of copper. - Calculate the moles of oxygen needed to react with the moles of copper.

3. Convert moles of oxygen to volume: - The molar volume of a gas at standard temperature and pressure (STP) is approximately 22.4 L/mol. - Use the molar volume to convert moles of oxygen to the volume of oxygen needed.

Conclusion

By following these steps, you can determine the volume of oxygen needed to oxidize 4g of copper.