Multiple Choice
What is the name of the polyatomic ion with the formula ClO_2^-?
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Polyatomic Ions
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the name of the polyatomic ion with the formula C2H3O2−?
A
Acetate
B
Carbonate
C
Formate
D
Oxalate
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Verified step by step guidance1
Identify the given polyatomic ion formula: C2H3O2⁻.
Recall common polyatomic ions and their formulas, focusing on those containing carbon, hydrogen, and oxygen.
Recognize that C2H3O2⁻ corresponds to the acetate ion, which is derived from acetic acid (CH3COOH) by losing a proton (H⁺).
Differentiate acetate from other options: carbonate (CO3²⁻), formate (HCOO⁻), and oxalate (C2O4²⁻) based on their distinct formulas and charges.
Conclude that the correct name for C2H3O2⁻ is acetate.
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