- Missed This Read Section 179 Pages 705 7059 K H Co K H Co Ksh C H O Ka H C H O Ksh C H Or 4 3x10 1 5 6x10 11 7 4 1 (21.73 KiB) Viewed 28 times
- Missed This Read Section 179 Pages 705 7059 K H Co K H Co Ksh C H O Ka H C H O Ksh C H Or 4 3x10 1 5 6x10 11 7 4 2 (32.35 KiB) Viewed 28 times
- Missed This Read Section 179 Pages 705 7059 K H Co K H Co Ksh C H O Ka H C H O Ksh C H Or 4 3x10 1 5 6x10 11 7 4 3 (30.97 KiB) Viewed 28 times
- Missed This Read Section 179 Pages 705 7059 K H Co K H Co Ksh C H O Ka H C H O Ksh C H Or 4 3x10 1 5 6x10 11 7 4 4 (27.02 KiB) Viewed 28 times
MISSED THIS? Read Section 17.9 (Pages 765-769). Kat H₂CO₂ K₁2 H₂ CO₂ Kal H₂CH₂O7 Kaz H₂CH₂ Or Ka H₂CH₂O₂ with Feedback 4.3 x 10-7 5.6 x 10-11 7.4 x 10-4 1.7 x 10-5 4.0 x 10-7 Part B Calculate the pH of this solution. Express your answer to two decimal places. ΑΣΦ pH = Review Constants 1 Periodic Tab and solving for z. Assuming z is small, z= (0.130M) x (4.3x10 ). Assuming (H₂O] was smat. [H] is 0.18% of 0.130 M, so the assumption is valid. Ka is much smaller than Kai. so it is ignored for finding [H₂0"] Submit Previous Answers Request Answer * Incorrect; Try Again; 5 attempts remaining Part C < ? 20 of 20 When the Kat value and Ka value for an acid are close in value, contribution to H₂O tormation resulting from the second ionization step must be taken in to consideration.
Exercise 17.112- Enhanced-with Feedback MISSED THIS? Read Section 17.9 (Pages 765-769) Kai H₂CO₂ Ka H₂CO₂ Ka HọC H:O. K₁ H₂C₂H₂O; Ka H₂C₂H₂O₂ 4.3 x 10-T 5.6 x 10-11 7.4 x 10-4 1.7 x 10- 4.0 x 10 ionization step must be taken in to consideration Part C Calculate [H₂O] of the following polyprotic acid solution: 0,125 AH,C,H,O, Express your answer using two significant figures. [H₂0] -0.3x10-3 M Previous Answers Part D 20 of 20 > ✔ Correct K and Ka are only 10 apart, so use both to calculate (H₂O). You may notice that the concentration only differs in t1 in the last significant digit when accounting for the contribution from the second ionization step. This further reinforces the generalization that the second step can be ignored when Kat >> K. When taking into account both steps, ICE (Initial Change, Equilibrium) tables can be used to find [H₂O) of both ionizations. Note that for this acid solution the approximation of [H₂O is only valid for the second ionization (0.18%) Calculate the pH of this solution Express your answer to two decimal places. VAX Rentes Contacts Exodio Tat
MISSED THIS? Read Section 179 (ages 288-290 K₁ H₂CO, Ka H₂CO, Ka H₂Call, O Ka H₂Call. O KH.CallO 4.3×10 5.6 x 10- 74x10-1 1.710 40 10 ₁08310 M Part D PA ✔Correct Ka and A we only 10 apart so use both to calculats H₂O1. You may note that the concertation only dars in in the last significant dig when accounting for the contribution to the second onion sa The further reinforces the genialzation that the second step can be ignore when KK When tong account both steps, ICE (val Change Cound tables can be used to find 1,01 of bon niin for this sed on the app ,01 oy ved for the second nication (10 ole Ce the pill of the Express your answer to two decimal places Submit VADO Ratuto Assignment Review Conta 9 21