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The name of Al₂(S0₄)₃ is named

a. dialuminum trisulfide
b. dialuminum trisulfate
c. dialuminum sulfate
d. aluminum sulfate
e. aluminum (III) sulfate

1 Answer

2 votes

Final answer:

The compound Al₂(SO₄)₃ is correctly named aluminum sulfate, as it consists of aluminum and sulfate ions in a 2:3 ratio without using prefixes for the metal name.

Step-by-step explanation:

The correct name for the compound with the chemical formula Al₂(SO₄)₃ is aluminum sulfate. This name is derived from the ions that make up the compound: Al³⁺ and SO₄²⁻, which combine in a 2:3 ratio. The nomenclature for ionic compounds does not require the use of prefixes like 'di-' or 'tri-' for the metal part of the name, hence 'dialuminum' is not used. Furthermore, this compound does not contain sulfide ions (S²⁻), which excludes the name 'trisulfide'. Instead, the name reflects the sulfate ion (SO₄²⁻) and the simplicity of the metal ion's name 'aluminum' without its charge, resulting in aluminum sulfate.

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