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What is the correct chemical formula for the ionic compound named aluminum sulfite?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct IUPAC name for Au2O3?
A
Digold trioxide
B
Aurate oxide
C
Gold(I) oxide
D
Gold(III) oxide
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Identify the elements and their quantities in the compound Au2O3: there are 2 gold (Au) atoms and 3 oxygen (O) atoms.
Determine the oxidation state of gold in Au2O3 by using the fact that oxygen typically has an oxidation state of -2.
Set up the equation for the total charge balance: let the oxidation state of gold be x, then 2(x) + 3(-2) = 0.
Solve the equation for x to find the oxidation state of gold in the compound.
Use the oxidation state found to write the correct IUPAC name as 'Gold(III) oxide', indicating gold has a +3 oxidation state.
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