Concept explainers
Identify the reactant that is a Brønsted-Lowry acid and the reactant that is a Brønsted-Lowry base in each of the following:
a.
b.
c.
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Basic Chemistry
- 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_forwardIndicate whether the first listed reactant in each of the following BrnstedLowry acidbase reactions is functioning as an acid or a base. a. HF + H2O H3O+ + F b. CN + H2O HCN + OH c. HCN + NO2 HNO2 + CN d. NH3 + HNO3 NH4+ + NO3arrow_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_forward
- The conjugate base of hydrofluoric acid dissolved in water is: a F b OH c H3O d HF e F2arrow_forwardCalculate the ionization constant for each of the following acids or bases form the ionization constant of its conjugate base or conjugate acid: (a) F- (b) NH4+ (c) AsO43- (d) (CH3)2 NH2+ (e) NO2- (f) HC2O4- (as a base)arrow_forwardIndicate whether the first listed reactant in each of the following BrnstedLowry acidbase reactions is functioning as an acid or a base. a. F + H2O HF + OH b. HClO + H2O H3O+ + ClO c. H3PO4 + NH3 NH4+ + H2PO4 d. HNO2 + HS H2S + NO2arrow_forward
- For 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_forwardAccording to the Brønsted-Lowry theory, which of the following would you expect to act as an acid? Which as a base? (a) CH3O- (b) CO32- (c) HAsO42-arrow_forwardCalculate the pKa value for each of the following acids. a. Phosphoric acid (H3PO4), Ka = 7.5 103 b. Hydrofluoric acid (HF), Ka = 6.8 104 c. Hydrogen phosphate ion (HPO42), Ka = 4.2 1013 d. Propanoic acid (HC3H5O2), Ka = 1.3 105arrow_forward
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