How many moles of CuO can be produced from 0.450 moles of Cu2O in the following reaction:

2Cu2O + O2 → 4CuO?

Question

How many moles of CuO can be produced from 0.450 moles of Cu2O in the following reaction: 
2Cu2O + O2 → 4CuO?

Anonymous · Accepted Answer

from the balanced equation, you can conclude that for every 2 moles Cu2O, 4 moles CuO is produced.

by ratio and proportion:

0.450 mol Cu2O x (4 mol CuO / 2 mol Cu2O) = no. of CuO produced

mol Cu2O cancelled, so the answer is: 0.9mol CuO.

Lyla Hamill I · Answer

This problem is solved by using dimensional analysis (a fancy term for a method of cross-multiplying with units).

Luckily, we won't need to convert into moles from grams since moles is the unit given. Thus, all we need to do is set up a mole ratio using the balanced equation. The equation tells us that for every 2 atoms of Cu2O used, 4 atoms of CuO is formed. Since moles are a standard quantity of atoms (6.022 * 10^23), the coefficients in the equation can also represent numbers of moles used. Therefore, for every 2 moles of Cu2O used, 4 moles of CuO are produced. The mole ratio is thus:

4 mol CuO

2 mol Cu2O

We the numerator and denominator by 2 to get a ratio of 2/1

We then multiply this ratio by the 0.450 mol of Cu2O given. This results in the equation:

0.450 mol Cu2O * 2 mol CuO/ 1 mol Cu2O

The units "mol Cu2O" cancel out, leaving us with .450 * 2 mol CuO. This gives us a final answer of 0.900 mol of CuO produced from using .450 mol of Cu2O.

Sorry if the equations are a bit confusing (they're much easier on paper), but hope the explanations are useful.

Anonymous · Answer

EASY ****!! wait till u do Limiting reagent and excess
.45 mol Cu2O X 4 mol CuO = .9 mol CuO
......................2 mol Cu2O

Katharina Denesik

How many moles of CuO can be produced from 0.450 mol of Cu2O in the following reaction?

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