Multiple Choice
Consider the reaction: HNO3(aq) + Ba(OH)2(aq) → ?. What is the formula for the salt that forms in this reaction?
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3. Chemical Reactions
Naming Acids
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Which of the following is the correct chemical formula for hypochlorous acid?
A
HClO_3
B
HCl
C
HClO
D
HClO_2
Verified step by step guidance1
Understand that hypochlorous acid is an oxyacid of chlorine, meaning it contains hydrogen, oxygen, and chlorine atoms.
Recall that the naming of oxyacids depends on the number of oxygen atoms: "hypo-" prefix indicates fewer oxygen atoms than "-ous" acids, and "-ous" acids have fewer oxygen atoms than "-ic" acids.
Recognize that hypochlorous acid has the formula with one oxygen atom bonded to chlorine and hydrogen, which is written as \(HClO\).
Compare the given options: \(HClO_3\) corresponds to chloric acid, \(HCl\) is hydrogen chloride (not an oxyacid), \(HClO\) is hypochlorous acid, and \(HClO_2\) is chlorous acid.
Conclude that the correct formula for hypochlorous acid is \(HClO\) based on the number of oxygen atoms and the acid naming conventions.
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