When an interfering substance m is present a fluoride ion, Ask an Expert

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When an interfering substance M is present, a fluoride ion selective electrode obeys the following modified response equation:

E(V) = K - ß(0.0592)log{[F-]+Ks[M-]}

A potential of -235.6 mV is measured for a fluoride ion selective electrode in a solution of 3.16×10-5 M fluoride at pH 5.00. Calculate the potential that would be measured if the solution pH were 9.70, assuming the selectivity coefficient (Ks) for OH- is 0.1 and that ß is 1.00. Please show your work.

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Category:- Chemistry
Reference No.:- M91068719

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