You may need Table 7.2 to answer the following questions.
a. Which is the stronger base, Cl₂ or H₂O?
b. Which is the stronger base, H₂O or NO₂₂?
c. Which is the stronger base, CN₂ or OC₆H₅?

Table 7.2

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Formula HSO4 HClO2 HC₂H₂CIO₂ HF HNO₂ HC₂H3O2 [Al(H₂O)6]³+ HOCI HCN NH4+ HOC6H5 Name Hydrogen sulfate ion Chlorous acid Monochloracetic acid Hydrofluoric acid Nitrous acid Acetic acid Hydrated aluminum(III) ion Hypochlorous acid Hydrocyanic acid Ammonium ion Phenol Value of Ka 1.2 x 10-2 1.2 x 10-2 1.35 x 10-3 7.2 x 10-4 4.0 X 10-4 1.8 x 10-5 1.4 x 10-5 3.5 x 10-8 6.2 X 10-10 5.6 X 10-10 1.6 X 10-10 Increasing acid strength