13 Question 13 Tries remaining 2 Points out of 1.00 P Flag question What is the...
Tries remaining Pants out of 10 p u esto What is the pH of a solution of the buffer containing 0.004 M HCNO and 0.062 M NaCNO? The K of HCNO is 2.0x10-4 Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response Answer: Check Question 14 What is the ratio of base to acid needed to obtain a pH of 4.51 for buffer containing HCSHENCI and CsH5N? The Ka of HC.HSN is 5.88x10-6 Multiple...
15 Question 15 Tries remaining: 1 Points out of 1.00 P Flag question Which of the following pH values are within the buffer range for a buffer containing 0.5 M H3PO4 and 0.5 M KH2PO4? The K, for H2PO4 is 6.9x10-3 Select any answers that apply. Multiple tries are permitted; however, 25% (1/4) point will be deducted for each incorrect response. Select one or more: 1.41 5.16 2.91
Question 15 Tries remaining: 1 Points out of 1.00 P Flag question Which of the following pH values are within the buffer range for a buffer containing 0.5 M NaHSO4 and 0.5 M Na2SO4? The Ka for HS04 is 1.2x10-2 Select any answers that apply. Multiple tries are permitted; however, 25% (1/4) point will be deducted for each incorrect response. Select one or more 1.21 0.21 2.54 4.13 7.89 Check action 10
14 Question 14 Tries remaining 2 Points out of 1.00 Flag question What is the ratio of base to acid needed to obtain a pH of 5.59 for buffer containing HCSH5NCI and CsH5N? The Ka of HC5H5N* is 5.88x10 Multiple tries are permitted; however, 20% ( 1/5) point will be deducted for each incorrect response
8 Question 8 Tries remaining: 2 Points out of 1.00 P Flag question What is the poH of a 0.05611 M solution of LiHS? The Ką of H2S is 8.9x10-8 Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response.
Question 1 Tries remaining: 2 Points out of 1.00 P Flag question What is the percent ionization of a 0.00478 M solution of HF? The Kais 6.4x10-4. Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response. Answer: Check
Check Question 8 Tries remaining: 2 Points out of 1.00 P Flag question What is the poH of a 0.01305 M solution of LiHS? The Ka of H2S is 8.9x10-8. Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response. Answer: Check 59% A RAPJA ві в е год. е
part 1 part 3 part 4 Tries remaining Points out of 1.00 P Flag question The molar solubility of mercury (1) sulfate (Hg2SO4) is 5.7 x 10-3 M. Determine the Ksp This question allows multiple attempts, however, 1/5 (20%) point will be deducted if an incorrect submission is submitted. Answer: Check Question 2 Tres remaining Points out of 100 pFing question The Ksp for the salt calcium hydroxide (Ca(OH)2) is 1.3 x 10-6. Determine its molar solubility This question allows...
9 Question 9 Tries remaining: 2 Points out of 1,00 P Flag question What is the pH of a 0.00831 M solution of NH(CH3)3Cl? The Kb of N(CH3)3 is 6.3x10-5 Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response
1 Question 1 Tries remaining: 1 Points out of 1.00 P Flag question What is the percent ionization of a 0.00078 M solution of HF? The Kais 6.4x10-4 Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response.