For many weak acid or weak base calculations, you can use a simplifying assumption to avoid solving quadratic equations. x2 Ka = [НА] — х [HA] Classify these situations by whether the assumption is valid or the quadratic formula is required. Assumption is valid Quadratic formula is required Answer Bank [HA] = 0.005 M [HA] = 0.05 M [HA] = 0.005 M [HA] = 1 M [HA] = 0.05 M Ką = 1 × 10-5 Ką = 1 x 10–4 Ka = 1 x 10-4 Ka = 1 × 10-3 K = 1 × 10-3

For many weak acid or weak base calculations, you can use a simplifying assumption to avoid solving quadratic equations. x2 Ka = [НА] — х [HA] Classify these situations by whether the assumption is valid or the quadratic formula is required. Assumption is valid Quadratic formula is required Answer Bank [HA] = 0.005 M [HA] = 0.05 M [HA] = 0.005 M [HA] = 1 M [HA] = 0.05 M Ką = 1 × 10-5 Ką = 1 x 10–4 Ka = 1 x 10-4 Ka = 1 × 10-3 K = 1 × 10-3

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 7P

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