Based on the balanced equation
4Na + O2 → 2Na2O
calculate the number of Na2O formula units formed when 60 Na atoms and 10 O2 molecules react?
Thanks.
To determine the number of Na2O formula units formed, we need to use the balanced equation and given stoichiometry.
The balanced equation states that:
4 Na + O2 → 2 Na2O
From the equation, we can see that 4 Na atoms react with 1 O2 molecule to produce 2 Na2O formula units.
Given that we have 60 Na atoms and 10 O2 molecules, we need to calculate the limiting reactant to determine the amount of Na2O formed.
1. Find the moles of Na atoms:
To calculate the moles of Na atoms, we need to use the molar mass of Na, which is approximately 22.99 g/mol.
Moles of Na = (Mass of Na / Molar mass of Na)
Moles of Na = (Number of Na atoms * Molar mass of Na) / Avogadro's number
Moles of Na = (60 * 22.99 g/mol) / 6.022 x 10^23 mol^-1
2. Find the moles of O2:
To calculate the moles of O2 molecules, we need to use the molar mass of O2, which is approximately 32.00 g/mol.
Moles of O2 = (Mass of O2 / Molar mass of O2)
Moles of O2 = (Number of O2 molecules * Molar mass of O2) / Avogadro's number
Moles of O2 = (10 * 32.00 g/mol) / 6.022 x 10^23 mol^-1
3. Determine the limiting reactant:
To determine the limiting reactant, we need to compare the moles of Na and O2. The reactant with fewer moles will be the limiting reactant.
The limiting reactant is the one that is completely consumed in the reaction, and the other reactant will be in excess.
In this case, we compare the moles of Na and O2.
4. Calculate the moles of Na2O formed:
From the balanced equation, we know that 4 Na atoms react to produce 2 Na2O formula units.
Thus, the moles of Na2O formed will be half of the moles of Na.
5. Find the number of Na2O formula units:
To calculate the number of Na2O formula units formed, we multiply the moles of Na2O formed by Avogadro's number.
I hope this explanation helps you understand how to calculate the number of Na2O formula units formed in this reaction.