Which equation is correctly balanced: $A.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $B.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $C.$ $Al(s) + 3/2O_2(g) rarr Al_2O_3(s);$ $D.$ $2Al(s) + 3O_2(g) rarr 2Al_2O_3(s)?$

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Which equation is correctly balanced: $A.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $B.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $C.$ $Al(s) + 3/2O_2(g) rarr Al_2O_3(s);$ $D.$ $2Al(s) + 3O_2(g) rarr 2Al_2O_3(s)?$

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Answer 1 · 2017-01-12T16:44:48

$"Option c"$ is mostly balanced........

Explanation:

Alumina is $Al_2O_3$ , which is the product of aluminum oxidation. None of your equations shows the correct formulae. We can rewrite the correct equation as:

$2Al(s)+ 3/2O_2(g) rarr Al_2O_3(s)$

This balances (i) mass, and (ii) charge. And thus it reflects chemical and physical reality.

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Which equation is correctly balanced: $A.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $B.$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $C.$ $Al(s) + 3/2O_2(g) rarr Al_2O_3(s);$ $D.$ $2Al(s) + 3O_2(g) rarr 2Al_2O_3(s)?$

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