THE X IS SMALL APPROXIMATION The initial concentration and Ka of several weak acid (HA) solutions are listed. For which solution is the x is small approximation least likely to work in finding the pH? (a) initial [HA]=0.100 M; Ka=1.0*10-5 (b) initial [HA]=1.00 M; Ka=1.0*10-6 (c) initial [HA]=0.0100 M; Ka=1.0*10-3 (d) initial [HA]=1.0 M; Ka=1.5*10-3

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THE X IS SMALL APPROXIMATION The initial concentration and Ka of several weak acid (HA) solutions are listed.

For which solution is the x is small approximation least likely to work in finding the pH?

(a) initial [HA]=0.100 M; Ka=1.0*10-5

(b) initial [HA]=1.00 M; Ka=1.0*10-6

(c) initial [HA]=0.0100 M; Ka=1.0*10-3

(d) initial [HA]=1.0 M; Ka=1.5*10-3

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