What is the formula of aluminum carbonate?

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What is the formula of aluminum carbonate?

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Answer 1 · 2018-05-06T19:27:12

$A l_{2} C O_{3})_{3}$ $Al_2CO_3)_3$

Explanation:

Aluminium generally has a charge of +3
The electron configuration of Aluminium is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{1}$ $1s^2 2s^2 2p^6 3s^2 3p^1$
=
The 3p electron and the 2 3s electrons are outer valance electrons and are lost to form the +3 charge.

The Carbonate ion has a charge of -2

$1 C = 1 \times + 4$ $1 C =1 xx +4$
$3 O = 3 \times - 2 = - 6$ $3 O = 3 xx -2 = -6$

$+ 4 + - 6 = - 2$ $+4 + -6 = -2$

Chemical compounds have a net charge of zero

$2 \times (+ 3) + 3 \times (- 2) = 0$ $2 xx (+3) + 3 xx ( -2) = 0$
$+ 6 + - 6 = 0$ $+ 6 + -6 = 0$

so the formula is

$A l_{2} {(C O_{3})}_{3}$ $Al_2 (CO_3)_3$

Answer 2 · 2018-05-06T19:29:51

$A l_{2}$ $Al_2$ ${(C O_{3})}_{3}$ $(CO_3)_3$

Explanation:

Aluminium - $A l^{3}$ $Al^3$
Carbonate - $C O_{3}^{- 2}$ $CO_3^-2$

Because the charge of aluminium is 3 and the charge of carbonate is -2, you need to multiply each to balance out at 6. So, "swap and drop":

2 $A l^{3}$ $Al^3$ & 3 $C O_{3}^{- 2}$ $CO_3^-2$

$A l_{2}$ $Al_2$ ${(C O_{3})}_{3}$ $(CO_3)_3$

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What is the formula of aluminum carbonate?

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