A buffered solution: a) turns light pink at the endpoint of a titration b) is co
ID: 536348 • Letter: A
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A buffered solution: a) turns light pink at the endpoint of a titration b) is composed of a strong acid and its conjugate base c) increases the hydronium ion concentration when bases are added d) resists changes in the pH when strong acids or bases are added e) none of these choices A weak acid: a) contains more than one acidic proton b) raises the pH when added to aqueous solutions c) does not completely ionize in aqueous solution d) does not have a corresponding conjugate base e) may act as both a proton donor and a proton acceptor Which is the strongest acid? a) H_2Te b) H_2S c) H_2Se d) H_2O e) all are equally acidic Which would be considered a Lewis base? a) NH_3 b) NF_3 c) PH_3 d) H_2O e) all can function as a Lewis base In the titration of 20.0 mL of a 0.100 M aqueous solution of hydrochloric acid (a strong monoprotic acid) with a 0.120 M aqueous solution of NaOH (a strong base), what volume of the NaOH solution is required to reach the equivalence point? a) 13.5 mL b) 16.7 mL c) 18.2 mL d) 20.7 mL e) 22.3 mLExplanation / Answer
53) D; A buffered solution resists changes in the pH when we add strong acids or bases.
54) C; Weak Acid does not completely ionize in aqeous solution which means partially ionized only.
55) A; H2Te is the strongest acid followed by H2Se and H2S from the above mentioned.
56) E; All can function as a Lewis Base from the above mentioned.
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