Chemistry, 18.02.2020 20:54 Hammon1774

Balance the equation Al + O2 →Al2O3

What are the mole ratio of Al and Al2O3 in the balanced equation?

Balance the equation Al + O2 →Al2O3 What are the mole ratio of Al and Al2O3 in the balanced equation

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Answer from: Shathep

4:2

Explanation:

While balancing equation, always ensure that both sides are of the same number of moles. This will certainly make the equation balance. According to the question, One mole of Al reacts with one mole of O2 to give Al2O3. If we should check the equation we can see that the number at both sides are not balanced. To balance this equation,we will have to consider each element from both sides. Here it goes

Al reacts to give Al2

If we should add 4 to the reactant Al, it will gives 4Al at the reactant side,4Al =Al2

Then we move to the O2 at the reactant side which gives O3 at the product side.if we add 3 to the O2 at the reactant side ,we have 3O2=O3

Let's combine everything together

4Al+3O2=Al2O3

To balance everything let's add 3to the Al2O3 at the product side to have 3Al2O3

To therefore,4Al +3O2=2Al2O3

And the mole ratio of Al to Al2O3 is 4:2...

Thanks

Answer from: Quest

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

Answer from: Quest

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

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Balance the equation Al + O2 →Al2O3

What are the mole ratio of Al and Al2O3 in the balan...

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