Write the formula for the conjugate acid of each base. (a) OH−OH − (b) HS−HS − (c) NH3NH 3 (d) C6H5O−C 6 H 5 O − (e) CO32−CO 32− (f) HCO3−HCO 3−
Question
Write the formula for the conjugate acid of each base. (a) OH−OH − (b) HS−HS − (c) NH3NH 3 (d) C6H5O−C 6 H 5 O − (e) CO32−CO 32− (f) HCO3−HCO 3−
Solution
(a) The conjugate acid of OH− is H2O (water). This is because a conjugate acid is formed by adding a proton (H+) to the base.
(b) The conjugate acid of HS− is H2S. When a proton (H+) is added to the HS− ion, it forms H2S.
(c) The conjugate acid of NH3 is NH4+. When a proton (H+) is added to NH3, it forms NH4+.
(d) The conjugate acid of C6H5O− is C6H5OH. When a proton (H+) is added to C6H5O−, it forms C6H5OH.
(e) The conjugate acid of CO32− is HCO3−. When a proton (H+) is added to CO32−, it forms HCO3−.
(f) The conjugate acid of HCO3− is H2CO3. When a proton (H+) is added to HCO3−, it forms H2CO3.
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