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Question 46 of 68 Which one of the following is the strongest weak base? Weak Base...
5. Which compound is the strongest base? Also explain why others are not? Consider this proton...
5. Which compound is the strongest base? Also explain why others
are not?
Consider this proton transfer reaction and answer questions 4-6 that follow. NH NH2 :CEN: H2NNH2 H-CEN H2N NH Compound D pK 13.6 Compound C weak bAse Compound Bay are Compound A pr,-10.9 yy
Consider this proton transfer reaction and answer questions 4-6 that follow. NH NH2 :CEN: H2NNH2 H-CEN H2N NH Compound D pK 13.6 Compound C weak bAse Compound Bay are Compound A pr,-10.9 yy
Which of the following solutions would be expected to have a pH less than 7.00? Weak...
Which of the following solutions would be expected to have a pH less than 7.00? Weak Acid к. Weak Base Ko A) C6H5COOK HCN 49 x 10 và HONH2 1,1 x 104 HNO2 4.5 x 104 NH B) HONH3Br 1.8 x 10 HIO 23 x 10" C.H.NH, 4.3 x 10 C) LIF HBrO 2.5 x 10 H2NNH2 1.3 x 10 C.H.COOH 6,3 x 10 CsHsN 1.7 x 10° D) KNOZ
Calculate the pH of a Weak Base Question The weak base dimethylamine, NH(CHs)2, has a molar...
Calculate the pH of a Weak Base Question The weak base dimethylamine, NH(CHs)2, has a molar mass of 45.09 g/mol and a base-dissociation constant K, 5.4 x 10. What is the pH of an aqueous solution of dimethylamine that contains 2.04 g of dimethylamine in 0.100 L of solution? Use pK 14.0 for the ion-product of water. Round your answer to one decimal place. Provide your answer below pi-14.0 FEEDBACK MORE INSTRUCTION Content attribution
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values...
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values given with this problem to choose the best weak base to start from for making a buffer that holds the pH of the solution at 9.70. Make your selection so that you maximize the capacity of the buffer. Assume that you want to make 100 mL of a buffer and you have already added enough of the conjugate acid salt to make the final...
Consider the following data on some weak acids and weak bases: acid base K name formula...
Consider the following data on some weak acids and weak bases: acid base K name formula name formula hydrocyanic acid HCN 4.9x10-10 acetic acid HCH,CO2 1.8 x 10-5 ethylamine C,H,NH, 6.4*10-4 [CH, NH, 4.3 x 10-10 aniline Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and...
Question 28 3 pts What is the pH of an aqueous solution after 10.0 mL of...
Question 28 3 pts What is the pH of an aqueous solution after 10.0 mL of 0.20 M NaOH is added to a 35.0 mL of 0.30 MHCIO? 05.12 O 2.77 O 3.48 6.89 lonization Constants for Acids at 25°C Name Formula Kai К2 Kaz Acetic Arsenic 1.0 x 107 3.0 x 10-12 Arsenous Ascorbic 1.6 x 10-12 Benzoic Boric HC2H302 H₂A504 НАО H2C8H08 HG,HgO2 H803 HC H102 H.CO, HC H20201 HCIOZ HyCH07 HCNO Butanol Carbonic 5.6 x 10-11 Chloroacetic...
Which of the following 1.0 M solutions would have the lowest pH? Weak Base Weak Weink...
Which of the following 1.0 M solutions would have the lowest pH? Weak Base Weak Weink Ka Kb Acid HCN 4.9 x 10-10 HONH2 1.1 x 10-8 A) LINO3 HNO2 4.5 x 10-4 NH3 1.8 x 10-5 B) HONH3Br HIO 2.3 x 10-11 C6H5NH2 4.3 x 10-10 C) H2NNH3CIO4 HBrO 2.5 x 10-9 H2NNH2 1.3 x 10-6 D) Ca(Bro)2 CoH5COOH 6.3 x 10-5 C5H5N 1.7 x 10-9
Q.4. Which of the following compounds is the strongest acid? a. CH b. CH.CH C. HỌC...
Q.4. Which of the following compounds is the strongest acid? a. CH b. CH.CH C. HỌC CHỊ d. HCECH Q.5. Which of the following is the strongest acid a. CH.CH b. CHÚNH с. СН,ОН d. CHF Q.6. Which of the following is easiest to deprotonate (removing a proton) ?! a CH b. CH.CH C. CH2=CH d. HCECH Q.7. Which of the following anions is the strongest base? a. CH,COO b. HO- C. NH" d. cr Q.8. Which set of curved...
Which of the following bases is the STRONGEST? The base is followed by its Ky NH3,...
Which of the following bases is the STRONGEST? The base is followed by its Ky NH3, 1.76 x 10-5 (CH3CH2)2NH, 8.6 * 10-4 CH5NH2, 4.0 * 10-10 CsHEN, 1.7*10- CH3NH2. 4 4 * 104
question 7 8 9 10 11 12 (7) Use HSAB theory to predict the following reactions...
question 7 8 9 10 11 12
(7) Use HSAB theory to predict the following reactions will go or not go (a) CH3-CH3 + H2O → CH,OH+CH (AH = 12 kcal/mol) (b) CH3COCH3 + H2O → CH3COOH + CH, (AH--13 kcal/mol ) (6%) (8) Predict the order of solubility: (9%) (a) MgSO4, CaSO4, SISOs, and Baso. (c) AgF, AgCl, AgBr, and Ag! (b) PbCI, PbBry, and Pbi! (9) List the following acids in order of acid strength in aqueous solution:...
5. Which compound is the strongest base? Also explain why others
are not?
Consider this proton transfer reaction and answer questions 4-6 that follow. NH NH2 :CEN: H2NNH2 H-CEN H2N NH Compound D pK 13.6 Compound C weak bAse Compound Bay are Compound A pr,-10.9 yy
Consider this proton transfer reaction and answer questions 4-6 that follow. NH NH2 :CEN: H2NNH2 H-CEN H2N NH Compound D pK 13.6 Compound C weak bAse Compound Bay are Compound A pr,-10.9 yy
Which of the following solutions would be expected to have a pH less than 7.00? Weak Acid к. Weak Base Ko A) C6H5COOK HCN 49 x 10 và HONH2 1,1 x 104 HNO2 4.5 x 104 NH B) HONH3Br 1.8 x 10 HIO 23 x 10" C.H.NH, 4.3 x 10 C) LIF HBrO 2.5 x 10 H2NNH2 1.3 x 10 C.H.COOH 6,3 x 10 CsHsN 1.7 x 10° D) KNOZ
Calculate the pH of a Weak Base Question The weak base dimethylamine, NH(CHs)2, has a molar mass of 45.09 g/mol and a base-dissociation constant K, 5.4 x 10. What is the pH of an aqueous solution of dimethylamine that contains 2.04 g of dimethylamine in 0.100 L of solution? Use pK 14.0 for the ion-product of water. Round your answer to one decimal place. Provide your answer below pi-14.0 FEEDBACK MORE INSTRUCTION Content attribution
Preparing Buffer Solutions: Calculating the Volume of Weak Base Needed Use the table of K values given with this problem to choose the best weak base to start from for making a buffer that holds the pH of the solution at 9.70. Make your selection so that you maximize the capacity of the buffer. Assume that you want to make 100 mL of a buffer and you have already added enough of the conjugate acid salt to make the final...
Consider the following data on some weak acids and weak bases: acid base K name formula name formula hydrocyanic acid HCN 4.9x10-10 acetic acid HCH,CO2 1.8 x 10-5 ethylamine C,H,NH, 6.4*10-4 [CH, NH, 4.3 x 10-10 aniline Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and...
Question 28 3 pts What is the pH of an aqueous solution after 10.0 mL of 0.20 M NaOH is added to a 35.0 mL of 0.30 MHCIO? 05.12 O 2.77 O 3.48 6.89 lonization Constants for Acids at 25°C Name Formula Kai К2 Kaz Acetic Arsenic 1.0 x 107 3.0 x 10-12 Arsenous Ascorbic 1.6 x 10-12 Benzoic Boric HC2H302 H₂A504 НАО H2C8H08 HG,HgO2 H803 HC H102 H.CO, HC H20201 HCIOZ HyCH07 HCNO Butanol Carbonic 5.6 x 10-11 Chloroacetic...
Which of the following 1.0 M solutions would have the lowest pH? Weak Base Weak Weink Ka Kb Acid HCN 4.9 x 10-10 HONH2 1.1 x 10-8 A) LINO3 HNO2 4.5 x 10-4 NH3 1.8 x 10-5 B) HONH3Br HIO 2.3 x 10-11 C6H5NH2 4.3 x 10-10 C) H2NNH3CIO4 HBrO 2.5 x 10-9 H2NNH2 1.3 x 10-6 D) Ca(Bro)2 CoH5COOH 6.3 x 10-5 C5H5N 1.7 x 10-9
Q.4. Which of the following compounds is the strongest acid? a. CH b. CH.CH C. HỌC CHỊ d. HCECH Q.5. Which of the following is the strongest acid a. CH.CH b. CHÚNH с. СН,ОН d. CHF Q.6. Which of the following is easiest to deprotonate (removing a proton) ?! a CH b. CH.CH C. CH2=CH d. HCECH Q.7. Which of the following anions is the strongest base? a. CH,COO b. HO- C. NH" d. cr Q.8. Which set of curved...
Which of the following bases is the STRONGEST? The base is followed by its Ky NH3, 1.76 x 10-5 (CH3CH2)2NH, 8.6 * 10-4 CH5NH2, 4.0 * 10-10 CsHEN, 1.7*10- CH3NH2. 4 4 * 104
question 7 8 9 10 11 12
(7) Use HSAB theory to predict the following reactions will go or not go (a) CH3-CH3 + H2O → CH,OH+CH (AH = 12 kcal/mol) (b) CH3COCH3 + H2O → CH3COOH + CH, (AH--13 kcal/mol ) (6%) (8) Predict the order of solubility: (9%) (a) MgSO4, CaSO4, SISOs, and Baso. (c) AgF, AgCl, AgBr, and Ag! (b) PbCI, PbBry, and Pbi! (9) List the following acids in order of acid strength in aqueous solution:...
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