Multiple Choice
What is the correct name for the ionic compound Al(NO3)3?
3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct IUPAC name for CuSO_4?
A
Copper(I) sulfate
B
Copper(II) sulfite
C
Copper(II) sulfate
D
Cupric sulfide
Verified step by step guidance1
Identify the chemical formula given: CuSO_4. This consists of copper (Cu), sulfur (S), and oxygen (O).
Recognize that SO_4 is the sulfate ion, which has a charge of -2. This helps determine the oxidation state of copper in the compound.
Determine the charge on copper by balancing the charges: since sulfate is -2, copper must be +2 to balance the compound to neutral.
Use the IUPAC naming convention for copper with a +2 charge, which is indicated by the Roman numeral II in parentheses after the metal name, resulting in Copper(II).
Combine the metal name with the anion name 'sulfate' to form the correct IUPAC name: Copper(II) sulfate.
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