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Draw the resonance structures for the bicarbonate ion, HCO3-.

  1. Does HCO3- have the same number of resonance structure as the CO32- ion? Are any less likely than others?
  2. What are the formal charges on the O and C atoms in HCO3-? What is the average formal charge on the O atoms? Compare this with the O atoms in CO32-.
  3. Protonation of HCO3- gives H2CO3. How do formal charges predict whether H+ ion will be attached?

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John Edward Cayas
John Edward CayasLv10
23 Nov 2020

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Related questions

Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Thendetermine the maximum number of equivalent resonance structures foreach species. Note that carbon is the central atom in all threecases. If the molecule contains hydrogen atoms they are attached tooxygen atoms. Only count the best structures. For example, Astructure with really bad formal charges should not becounted.
The molecule H2CO3 has______ equivalent Lewis structures.
The molecule HCO3- has______ equivalent Lewis structures.
The molecule CO32- has______ equivalent Lewis structures
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Thendetermine the maximum number of equivalent resonance structures foreach species. Note that carbon is the central atom in all threecases. If the molecule contains hydrogen atoms they are attached tooxygen atoms. Only count the best structures. For example, Astructure with really bad formal charges should not becounted.
The molecule H2CO3 has __ equivalent Lewis structures.
The molecule HCO3- has __ equivalent Lewis structures.
The molecule CO32- has ___ equivalent Lewis structures.

Compare the electron dot structures of the carbonate (CO32āˆ’) and borate (BO33āˆ’) ions.

  1. Are these ions isoelectronic?
  2. How many resonance structures does each ion have?
  3. What are the formal charges of each atom in these ions?
  4. If an H+ ion attaches to CO32āˆ’ to form the bicarbonate ion, HCO3āˆ’, does it attach to an O atom or to the C atom?

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