MISSED THIS? Read Section 18.3 (Pages 799-802). The following table shows the values of ionization constants for a numbe

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Missed This Read Section 18 3 Pages 799 802 The Following Table Shows The Values Of Ionization Constants For A Numbe 1 (53.4 KiB) Viewed 38 times

Missed This Read Section 18 3 Pages 799 802 The Following Table Shows The Values Of Ionization Constants For A Numbe 2 (42.82 KiB) Viewed 38 times

MISSED THIS? Read Section 18.3 (Pages 799-802). The following table shows the values of ionization constants for a number of acids and bases at 25 °C: Formula Ka HC₂H302 1.8 x 10-5 HCIO2 1.1 x 107 NH3 HCIO 2.9 x 10-8 Kb 1.76 x 10-5
Part A Which buffer system is the best choice to create a buffer with pH = 7.10? HCIO₂/KCIO₂ HC₂H30₂/KC₂H30₂ NH3/NH4Cl • HCIO/KCIO ✓ Correct The effective range for a buffering system is one pH unit on either side of pKa. Therefore, calculate the pK, for each buffer system. For HC₂H₂O₂/KC₂H30₂ pk Part B Previous Answers For HC1O₂/KC1O₂. PK₁ 1.96; for HCIO/KCIO, PK,= 7.54; and, for NH3/NH.CI. pK 14.00- pkt =14.00 4.754 9.25 So, HCIO/KCIO is the best choice to create a buffer with pH 7.10 because HCIO has the pK, value that is closest to 7.10. m(KCIO) m(HCIO) For the best system, calculate the ratio of the masses of the butter components required to make the buffer. Express your answer to two significant figures. 10 ΑΣΦ Submit .85 Previous Answers Request Answer -log K₁ = -log(1.8 x 10-5 4.74 x Incorrect; Try Again; 2 attempts remaining ?