Multiple Choice
Which of the following is the correct chemical formula for iron(III) sulfite?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct chemical formula for strontium sulfate?
A
SrSO4
B
Sr2SO4
C
Sr2(SO4)3
D
SrS
Verified step by step guidance1
Identify the ions involved in strontium sulfate. Strontium typically forms a Sr^{2+} ion, and sulfate is the polyatomic ion SO_4^{2-}.
Determine the charges of the ions: Sr^{2+} has a +2 charge, and SO_4^{2-} has a -2 charge.
Since the charges are equal and opposite, they combine in a 1:1 ratio to form a neutral compound.
Write the chemical formula by placing the cation first followed by the anion without any additional subscripts because the charges balance out: SrSO_4.
Verify that the formula is electrically neutral by confirming that the total positive charge equals the total negative charge.
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