15 Question 15 Tries remaining: 1 Points out of 1.00 P Flag question Which of the...
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
13 Question 13 Tries remaining 2 Points out of 1.00 P Flag question 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.
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
Question 3 Tries remaining: 2 Points out of 1.00 P Flag question Predict which of the following oxyacids is the strongest acid. Multiple tries are permitted; however, 33% (1/3) point will be deducted for each incorrect response. Select one HNO2 H2NO2 Ο ΗΝO H2N202 Check
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
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 15 Tries remaining Points out of 1.00 Flag question Find the temperature (°C) below which the evaporation of unknown liquid Dis spontaneous. The change in enthalpy for the reaction is -263.7 kJ, and the change in entropy is -481.5 J/K. 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
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.
19 Question 19 Tries remaining 1 Points out of 1.00 P Flag question For the equilibrium reaction written below, AG = -213.9 kJ at 298 K. If the partial pressure of CO2 is 1.4 atm, what is the standard change in Gibb's free energy (kJ) of this reaction? CO,() =CO,() Multiple tries are permitted; however, 20% (1/5) point will be deducted for each incorrect response. Answer: