What is the formula of aluminum acetate?
$\left( C _2 H _3 O _2\right)_3 Al$
AIAc
$AlC _2 H _3 O _{23}$
$Al \left( C _2 H _3 O _2\right)_3$
Answer (1)
Aluminum acetate consists of aluminum ions ( A l 3 + ) and acetate ions ( C 2 H 3 O 2 − ).
Three acetate ions are needed to balance the +3 charge of the aluminum ion.
The chemical formula is written with aluminum first, followed by the acetate ion in parentheses with a subscript of 3.
The correct chemical formula for aluminum acetate is A l ( C 2 H 3 O 2 ) 3 .
Explanation
Problem Analysis We are asked to identify the correct chemical formula for aluminum acetate from the given options.
Identifying Ions and Charges Aluminum acetate is formed from the aluminum ion ( A l 3 + ) and the acetate ion ( C 2 H 3 O 2 − ). Since aluminum has a +3 charge, three acetate ions are required to balance the charge and form a neutral compound.
Forming the Neutral Compound The correct formula should represent one aluminum ion and three acetate ions. This is written as A l ( C 2 H 3 O 2 ) 3 .
Identifying the Correct Option Comparing this with the given options, we find that the correct formula is A l ( C 2 H 3 O 2 ) 3 .
Examples
Aluminum acetate is used in various applications, such as a mordant in dyeing textiles, as an antiseptic, and as an astringent. Understanding its chemical formula is crucial for proper usage and synthesis in these applications. For example, in dyeing, it helps the dye adhere to the fabric. In medicine, it can be used to treat skin irritations due to its astringent properties. Knowing the correct formula ensures that the compound is used safely and effectively.
