sify these situations by whether the assumption is valid or the quadratic formula is required. Assumption is valid [HA]=0.001 M K₁=1 x 105 [HA] = 0.01 M K₁-1× 10-5 Quadratic formula is required [HA] 0.1 M K₁=1 x 10- (HA) = 1 M K₁=1 × 10- [HA]=0.01 M K₁=1 x 10-4

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases
Section16.10: The Lewis Concept Of Acids And Bases
Problem 2.5ACP: To measure the relative strengths of bases stronger than OH, it is necessary to choose a solvent...
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G.219.

 

For many weak acid or weak base calculations, you can use a simplifying assumption to avoid solving quadratic equations.
x²
+²
K₂ =
[HA] - x
[HA]
Classify these situations by whether the assumption is valid or the quadratic formula is required.
incorrect
B
Assumption is valid
[HA]=0.001 M
K₁=1 x 105
[HA] 0.01 M
K₁=1 x 10-5
Answer Bank
Quadratic formula is required
[HA] = 0.1 M
K₁=1 x 10-3
(HA) = 1 M
K₁ = 1 × 10-³
[HA] 0.01 M
K₁=1 x 10
Transcribed Image Text:For many weak acid or weak base calculations, you can use a simplifying assumption to avoid solving quadratic equations. x² +² K₂ = [HA] - x [HA] Classify these situations by whether the assumption is valid or the quadratic formula is required. incorrect B Assumption is valid [HA]=0.001 M K₁=1 x 105 [HA] 0.01 M K₁=1 x 10-5 Answer Bank Quadratic formula is required [HA] = 0.1 M K₁=1 x 10-3 (HA) = 1 M K₁ = 1 × 10-³ [HA] 0.01 M K₁=1 x 10
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