a)
Interpretation: The Lewis acid and Lewis base have to be identified.
Concept introduction: Species that donate electron pairs resulting in the bond formation are called a Lewis base and the species that accept the electron pair and result in the bond formation is called a Lewis acid. The Lewis base should have lone pair of electrons and the Lewis acid should have a vacant orbital.
b)
Interpretation: The Lewis acid and Lewis base have to be identified.
Concept introduction: Species that donate electron pairs resulting in the bond formation are called a Lewis base and the species that accept the electron pair and result in the bond formation are called a Lewis acid. The Lewis base should have lone pair of electrons and the Lewis acid should have a vacant orbital.
c)
Interpretation: The Lewis acid and Lewis base have to be identified.
Concept introduction: Species that donate electron pairs resulting in the bond formation are called a Lewis base and the species that accept the electron pair and result in the bond formation are called a Lewis acid. The Lewis base should have lone pair of electrons and the Lewis acid should have a vacant orbital.
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CHEMISTRY: THE MOLECULAR NATURE OF MATTE
- Pure liquid ammonia ionizes in a manner similar to that of water. (a) Write the equilibrium for the autoionization of liquid ammonia. (b) Identify the conjugate acid form and the base form of the solvent. (c) Is NaNH2 an acid or a base in this solvent? (d) Is ammonium bromide an acid or a base in this solvent?arrow_forwardIn each of the following acid-base reactions, identify the Brnsted acid and base on the left and their conjugate partners on the right. (a) HCO2H(aq) + H2O() HCO2(aq) + H3O+(aq) (b) NH3(aq) + H2S(aq) NH4+(aq) + HS(aq) (c) HSO4(aq) + OH(aq) SO42(aq) + H2O+()arrow_forwardWhich acid has the strongest conjugate base? (a) HNO2 (b) C6H5CO2H (c) HCN (d) HClarrow_forward
- Ethanol (ethyl alcohol), CH3CH2OH, can act as a BrnstedLowry acid. Write the chemical equation for the reaction of ethanol as an acid with hydroxide ion, OH. Ethanol can also react as a BrnstedLowry base. Write the chemical equation for the reaction of ethanol as a base with hydronium ion, H3O+. Explain how you arrived at these chemical equations. Both of these reactions can also be considered Lewis acid base reactions. Explain this.arrow_forwardFor each of the following pairs of acids, indicate whether the first member of the pair is a stronger or weaker acid than the second member of the pair. a. HNO3 and HNO2 b. HF and HBr c. H2CO3 and HClO3 d. HCN and HClarrow_forwardWrite equations that show NH3 as both a conjugate acid and a conjugate base.arrow_forward
- Write the reaction and the corresponding Kb equilibrium expression for each of the following substances acting as bases in water. a. NH3 b. C5H5Narrow_forwardIndicate whether or not the two members of each of the following pairs of substances constitute a conjugate acidbase pair. a. HN3 and N3 b. H2SO4 and SO42 c. NH3 and NH2 d. HCO3 and CO32arrow_forwardClassify each of the following as a strong acid, weak acid, strong base, or weak base in aqueous solution. a. HNO2 b. HNO3 c. CH3NH2 d. NaOH e. NH3 f. HF g. h. Ca(OH)2 i. H2SO4arrow_forward
- In each of the following acid-base reactions, identify the Brnsted acid and base on the left and their conjugate partners on the right. (a) C2H5N(aq) + CH3CO2H(aq) C5H5NH+(aq) + CH3CO2(aq) (b) N2H4(aq) + HSO4(aq) N2H5+(aq) + SO42(aq) (c) [Al(H2O)6]3+ (aq) + OH(aq) [Al(H2O)5OH]2+ (aq) + H2O+()arrow_forwardA hydrogen atom in the organic base pyridine, C5H5N, can be substituted by various atoms or groups to give XC5H4N, where X is an atom such as Cl or a group such as CH3. The following table gives Ka values for the conjugate acids of a variety of substituted pyridines. (a) Suppose each conjugate acid is dissolved in sufficient water to give a 0.050 M solution. Which solution would have the highest pH? The lowest pH? (b) Which of the substituted pyridines is the strongest Brnsted base? Which is the weakest Brnsted base?arrow_forwardWrite the chemical equation for the ionization of caffeine, a weak base. The chemical formula of caffeine is C8H10N4O2.arrow_forward
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