Question

The selectivity coefficient, KLi+, H+, for a Li+ ion selective electrode is 4 x 10^-4. When this electrode is placed in 3.43 x 10^-4 M Li+ solution at pH 7.2, the potential is -0.343 V versus S.C.E. What would be the potential if the pH were lowered to 1.2 and the ionic strength were kept constant? (Hint: At pH 7.2 the effect of H+ will be negligible because the concentration of H+ is much less than that of Li+) (Keep three sig. fig. in your final answer.)

Name: the selectivity coefficientklih for a li ion selective electrode is 4 x 10 4 when this electrode is placed in 343 x 10 4 m li solution at ph 72 the potential is 0343 v versus sce what would 40997
Uploaded: 2022-12-30T07:47:52-08:00
Duration: 2 min 24 s
Channel: Madhur L
Description: the selectivity coefficientklih for a li ion selective electrode is 4 x 10 4 when this electrode is placed in 343 x 10 4 m li solution at ph 72 the potential is 0343 v versus sce what would 40997

          The selectivity coefficient, KLi+, H+, for a Li+ ion selective electrode is 4 x 10^-4. When this electrode is placed in 3.43 x 10^-4 M Li+ solution at pH 7.2, the potential is -0.343 V versus S.C.E. What would be the potential if the pH were lowered to 1.2 and the ionic strength were kept constant? (Hint: At pH 7.2 the effect of H+ will be negligible because the concentration of H+ is much less than that of Li+)
(Keep three sig. fig. in your final answer.)

Added by James M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

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The selectivity coefficient, KLi+, H+, for a Li+ ion selective electrode is 4 x 10^-4. When this electrode is placed in 3.43 x 10^-4 M Li+ solution at pH 7.2, the potential is -0.343 V versus S.C.E. What would be the potential if the pH were lowered to 1.2 and the ionic strength were kept constant? (Hint: At pH 7.2 the effect of H+ will be negligible because the concentration of H+ is much less than that of Li+) (Keep three sig. fig. in your final answer.)