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Write The Formula For Aluminum Sulfate
The method of finding the chemical formula of aluminum sulfate
To find the chemical formula of a substance, it is necessary to clarify the proportion of its constituent elements and the atoms of each element. Aluminum sulfate is composed of aluminum ($Al $) and sulfate ($SO_ {4} $).
The common valence of aluminum is $+ 3 $, and the valence of sulfate is $- 2 $. In order to make the algebra sum of the valence of each element in the compound zero, let the number of aluminum atoms be $x $and the number of sulfate groups be $y $, then there is $ (+ 3) x + (- 2) y = 0 $.
Calculation shows that when $x = 2 $and $y = 3 $, the equation holds. Therefore, the chemical formula of aluminum sulfate is $Al_ {2} (SO_ {4}) _ {3} $.
To find the chemical formula of a substance, it is necessary to clarify the proportion of its constituent elements and the atoms of each element. Aluminum sulfate is composed of aluminum ($Al $) and sulfate ($SO_ {4} $).
The common valence of aluminum is $+ 3 $, and the valence of sulfate is $- 2 $. In order to make the algebra sum of the valence of each element in the compound zero, let the number of aluminum atoms be $x $and the number of sulfate groups be $y $, then there is $ (+ 3) x + (- 2) y = 0 $.
Calculation shows that when $x = 2 $and $y = 3 $, the equation holds. Therefore, the chemical formula of aluminum sulfate is $Al_ {2} (SO_ {4}) _ {3} $.
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