Concept explainers
(a)
Interpretation: The acidic character of the given structures is to be explained using the resonance structures.
Concept introduction: Resonance is defined as a criterion of defining the delocalized electrons present in certain molecules or polyatomic ions where one Lewis structure is not sufficient to explain the bonding. The different structures obtained are known as resonance structures.
To determine: The explanation regarding the acidic nature of the given structure (Methanal).
(b)
Interpretation: The acidic character of the given structures is to be explained using the resonance structures.
Concept introduction: Resonance is defined as a criterion of defining the delocalized electrons present in certain molecules or polyatomic ions where one Lewis structure is not sufficient to explain the bonding. The different structures obtained are known as resonance structures.
To determine: The explanation regarding the acidic nature of the given structure.
(c)
Interpretation: The acidic character of the given structures is to be explained using the resonance structures.
Concept introduction: Resonance is defined as a criterion of defining the delocalized electrons present in certain molecules or polyatomic ions where one Lewis structure is not sufficient to explain the bonding. The different structures obtained are known as resonance structures.
To determine: The explanation regarding the acidic nature of the given structure.
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Chemistry: An Atoms First Approach
- The chemistry of the nitrite ion and HNO2: (a) Two resonance structures are possible for NO2. Draw these structures, and then find the formal charge on each atom in each resonance structure. (b) In forming the acid HNO2 an H+ ion attaches to the O atom and not the N atom of NO2. Explain why you would predict this result. (c) Two resonance structures are possible for HNO2. Draw these structures, and then find the formal charge on each atom in each resonance structure. Is either of these structures strongly preferred over the other?arrow_forwardWrite all resonance structures of chlorobenzene, C6H5Cl, a molecule with the same cyclic structure as benzene. In all structures, keep the CCl bond as a single bond. Which resonance structures are the most important?arrow_forwardBond Enthalpy When atoms of the hypothetical element X are placed together, they rapidly undergo reaction to form the X2 molecule: X(g)+X(g)X2(g) a Would you predict that this reaction is exothermic or endothermic? Explain. b Is the bond enthalpy of X2 a positive or a negative quantity? Why? c Suppose H for the reaction is 500 kJ/mol. Estimate the bond enthalpy of the X2 molecule. d Another hypothetical molecular compound, Y2(g), has a bond enthalpy of 750 kJ/mol, and the molecular compound XY(g) has a bond enthalpy of 1500 kJ/mol. Using bond enthalpy information, calculate H for the following reaction. X2(g)+Y2(g)2XY(g) e Given the following information, as well as the information previously presented, predict whether or not the hypothetical ionic compound AX is likely to form. In this compound, A forms the A+ cation, and X forms the X anion. Be sure to justify your answer. Reaction: A(g)+12X2(g)AX(s)The first ionization energy of A(g) is 400 kJ/mol. The electron affinity of X(g) is 525 kJ/mol. The lattice energy of AX(s) is 100 kJ/mol. f If you predicted that no ionic compound would form from the reaction in Part e, what minimum amount of AX(s) lattice energy might lead to compound formation?arrow_forward
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- Draw resonance structures for the SO2 molecule, and determine the formal charges on the S and O atoms. Are the SO bonds polar, and is the molecule as a whole polar? If so, what is the direction of the net dipole in SO2? Is your prediction confirmed by the electrostatic potential surface? Explain briefly.arrow_forward46. Write the resonance forms of ozone, O3, the component of the upper atmosphere that protects the Earth from ultraviolet radiation.arrow_forward46. Write the resonance forms of ozone, O3, the component of the upper atmospher that protects the Earth from ultraviolet radiation.arrow_forward
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