Which equation is correctly balanced: $A .$ $A.$ $A l (s) + 3 O_{2} (g) \to A l_{2} O_{3} (s);$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $B .$ $B.$ $A l (s) + 3 O_{2} (g) \to A l_{2} O_{3} (s);$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $C .$ $C.$ $A l (s) + \frac{3}{2} O_{2} (g) \to A l_{2} O_{3} (s);$ $Al(s) + 3/2O_2(g) rarr Al_2O_3(s);$ $D .$ $D.$ $2 A l (s) + 3 O_{2} (g) \to 2 A l_{2} O_{3} (s) ?$ $2Al(s) + 3O_2(g) rarr 2Al_2O_3(s)?$

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Which equation is correctly balanced: $A .$ $A.$ $A l (s) + 3 O_{2} (g) \to A l_{2} O_{3} (s);$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $B .$ $B.$ $A l (s) + 3 O_{2} (g) \to A l_{2} O_{3} (s);$ $Al(s) + 3O_2(g) rarr Al_2O_3(s);$ $C .$ $C.$ $A l (s) + \frac{3}{2} O_{2} (g) \to A l_{2} O_{3} (s);$ $Al(s) + 3/2O_2(g) rarr Al_2O_3(s);$ $D .$ $D.$ $2 A l (s) + 3 O_{2} (g) \to 2 A l_{2} O_{3} (s) ?$ $2Al(s) + 3O_2(g) rarr 2Al_2O_3(s)?$

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Answer 1 · 2017-01-12T16:44:48

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

Explanation:

Alumina is $A l_{2} O_{3}$ $Al_2O_3$ , which is the product of aluminum oxidation. None of your equations shows the correct formulae. We can rewrite the correct equation as:

$2 A l (s) + \frac{3}{2} O_{2} (g) \to A l_{2} O_{3} (s)$ $2Al(s)+ 3/2O_2(g) rarr Al_2O_3(s)$

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.A. Al(s)+3O2(g)→Al2O3(s);Al(s) + 3O_2(g) rarr Al_2O_3(s); B.B. Al(s)+3O2(g)→Al2O3(s);Al(s) + 3O_2(g) rarr Al_2O_3(s); C.C. Al(s)+32O2(g)→Al2O3(s);Al(s) + 3/2O_2(g) rarr Al_2O_3(s); D.D. 2Al(s)+3O2(g)→2Al2O3(s)?2Al(s) + 3O_2(g) rarr 2Al_2O_3(s)?

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