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Ch.3 - Molecules, Compounds & Chemical Equations
All textbooksTro 4th EditionCh.3 - Molecules, Compounds & Chemical EquationsProblem 56a
Chapter 3, Problem 56a

Refer to the nomenclature flowchart (Figure 3.11) to name each compound. a. HNO2(aq)

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1
Identify the type of compound: HNO_2(aq) is an oxyacid because it contains hydrogen, oxygen, and another element (nitrogen).
Determine the polyatomic ion present: The polyatomic ion in HNO_2 is nitrite (NO_2^-).
Use the naming rule for oxyacids: If the polyatomic ion ends in '-ite', the acid name will end in '-ous acid'.
Combine the root of the polyatomic ion with the appropriate suffix: The root for nitrite is 'nitr-', and since it ends in '-ite', the acid name will be 'nitrous acid'.
Write the full name of the compound: HNO_2(aq) is named 'nitrous acid'.

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