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Ionic Compound Formula Aluminum Sulfate
On the Derivation of the Chemical Formula of Aluminum Sulfate Ionic Compounds
The way of chemistry is to seek the composition of the substance and to clarify its properties, and the derivation of the chemical formula of the ionic compound is an important step. Now take aluminum sulfate as an example to discuss the method of derivation of its chemical formula.
Aluminum is in the third main group of the periodic table of elements. The outermost layer of its atom has three electrons, which are volatile, and the positive trivalent is expressed in $Al ^ {3 +} $. Sulfate is a common acid group, and its overall negative divalent is expressed in $SO_ {4} ^ {2 -} $. The chemical formula of
ionic compounds is written in accordance with the principle of conservation of charge. In order to make the total number of charges of anions and cations in aluminum sulfate equal, the simplest integer ratio of aluminum ions to sulfate ions must be obtained. Let the number of aluminum ions be $x $and the number of sulfate ions be $y $, then according to the conservation of charge: $3x = 2y $.
Find the simplest integer ratio of $x $and $y $, and get $x: y = 2:3 $. Therefore, the chemical formula of the ionic compound of aluminum sulfate is $Al_ {2} (SO_ {4}) _ {3} $.
From this point of view, the chemical formula of the ionic compound is deduced. The first is to show the valence state of each ion, and the ratio is obtained according to the conservation of charge. In this way, the chemical formula can be understood.
The way of chemistry is to seek the composition of the substance and to clarify its properties, and the derivation of the chemical formula of the ionic compound is an important step. Now take aluminum sulfate as an example to discuss the method of derivation of its chemical formula.
Aluminum is in the third main group of the periodic table of elements. The outermost layer of its atom has three electrons, which are volatile, and the positive trivalent is expressed in $Al ^ {3 +} $. Sulfate is a common acid group, and its overall negative divalent is expressed in $SO_ {4} ^ {2 -} $. The chemical formula of
ionic compounds is written in accordance with the principle of conservation of charge. In order to make the total number of charges of anions and cations in aluminum sulfate equal, the simplest integer ratio of aluminum ions to sulfate ions must be obtained. Let the number of aluminum ions be $x $and the number of sulfate ions be $y $, then according to the conservation of charge: $3x = 2y $.
Find the simplest integer ratio of $x $and $y $, and get $x: y = 2:3 $. Therefore, the chemical formula of the ionic compound of aluminum sulfate is $Al_ {2} (SO_ {4}) _ {3} $.
From this point of view, the chemical formula of the ionic compound is deduced. The first is to show the valence state of each ion, and the ratio is obtained according to the conservation of charge. In this way, the chemical formula can be understood.
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