You have 50 ml of a complex mixture of weak acids that contains some HF (pKa...
You have 50 ml of a complex mixture of weak acids that contains some HF (pKa = 3.18) and some HCN (pKa = 9.21). Which is larger, [F-]/[HF] or [CN-]/[HCN]?
- [F-]/[HF]
- [CN-]/[HCN]
- can.t tell from available information
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You have 50 ml of a complex mixture of weak acids that contains
some HF (pKa...
1. A comic book villain is holding you at gun point and is making you drink...
1. A comic book villain is holding you at gun point and is making you drink a sample of acid. She gives you a beaker with 100ml of a strong acid with pH=5. She also gives you a beaker of a strong base with a pH=10. You can add as much of the strong base to the strong acid as you want, and you must then drink the solution. You'd be best off trying to make the solution neutral before...
HF and HCN are both weak acids, but HF is a stronger acid than HCN ▪...
HF and HCN are both weak acids, but HF is a stronger acid than HCN ▪ Consider the following reaction and determine the value of K HF + CN– ⇄ F– + HCN a. Value of K is greater than 1 b. Value of K is less than 1 c. Value of K is equal to 1 d. There is no way to tell Can you please explain how you got your answer, thanks!
Question completion Status QUESTION 6 2 points Save Answer Below is a list of some weak acids Name Formula pka Mol...
Question completion Status QUESTION 6 2 points Save Answer Below is a list of some weak acids Name Formula pka Molar Mass acetic acid HIC2H302) 4.76 60,052 butanoic acid HICH702) 18104 formic acid PHO) 3.75 46.024 heptanoic acid HC7H1302) 4.89 130.182 hexanoic acid 1102) 4 116.16 hydrocyanic acid HCN 9.21 27028 32 20.00 hydrofluoric acid HF lactic acid HIC3H503) 3.08 90.078 nitrous acid HINO2 3.25 47.018 octano acid HICOM1502) 489144208 HICH902) 4.84 102.13 pentanoic acid propanoic acid H502) 486 14.078...
TABLE 15.5 Acid lonization Constants (K) for Some Monoprotic Weak Acids at 25 °C Acid Formula...
TABLE 15.5 Acid lonization Constants (K) for Some Monoprotic Weak Acids at 25 °C Acid Formula Structural Formula lonization Reaction К. pk, = -log (2) Chlorous acid HCIO H-0-C=0 1.1 x 10-2 1.96 Stronger acids Nitrous acid HNOZ H-O-NO 5.6 x 10-4 HCIO2(aq) + H2011) = H30* (aq) + CO2 (aq) HNO2(aq) + H20(I) = H30+ (aq) + NO2 (aq) HF(aq) + H20(1) = H30* (aq) + F"(aq) 3.25 Hydrofluoric acid HF H-F 6.3 x 10-4 3.20 O Methanoic acid...
_1)If you want to have a buffer of pH 3.60 which of the following weak acids...
_1)If you want to have a buffer of pH 3.60 which of the following weak acids should you use to build your buffer? a)CH3COOH K, = 1.8 x 105 b) HCN K 6.2 x 10-10 HF K-6.8 x 10 d) HOCI K-2.9 x 10 474 2) What is a buffer solution? a@)a solution that resists changes in pH 4.2 b) a solution that increases in pH
Question 8 2 pts If you have 50.0 mL of a 0.010 M solution of each...
Question 8 2 pts If you have 50.0 mL of a 0.010 M solution of each of the following weak acids which solution would expected to have the greatest osmotic pressure? HC2H302 Ka - 1.8 x 10-5 O HCN Ka = 4,9x 10-10 H3PO4 Ka = 7.5 x103 HF Ka-3.5 x 104
You work in a chemistry lab, and are asked to prepare 500 mL of a buffer solution with pH-3.20, T...
You work in a chemistry lab, and are asked to prepare 500 mL of a buffer solution with pH-3.20, The weak acid solution concentration in this buffer should be 0.250 M and salt is a solid. The following steps walk you through a step by step process of this preparation. a. Choose the proper weak acids for the buffer solution Table 1. Ionization constant Ka for some weak acids Name Hydrofluoric acid Nitrous acid Fulminic acid Acetic acid Hypochlorous acid...
TABLE 15.5 Acid lonization Constants (K) for Some Monoprotic Weak Acids at 25 °C Acid Formula...
TABLE 15.5 Acid lonization Constants (K) for Some Monoprotic Weak Acids at 25 °C Acid Formula Structural Formula lonization Reaction К. pk, = -log (2) Chlorous acid HCIO H-0-C=0 1.1 x 10-2 1.96 Stronger acids Nitrous acid HNOZ H-O-NO 5.6 x 10-4 HCIO2(aq) + H2011) = H30* (aq) + CO2 (aq) HNO2(aq) + H20(I) = H30+ (aq) + NO2 (aq) HF(aq) + H20(1) = H30* (aq) + F"(aq) 3.25 Hydrofluoric acid HF H-F 6.3 x 10-4 3.20 O Methanoic acid...
late for class please just help with these dont have time to make more posts 4....
late for class please just
help with these dont have time to make more posts
4. The equilibrium constant values for a number of reactions are listed below. Indicate whether the products or reactants are favored. Reaction Which side is favored? NH3(aq) + H2O(l) 5 NH4+ (aq) + OH(aq) K = 5.0 x 1012 2 HBr 5 2 Hz Brz K = 5.8 x 10-18 CH3CH(OH)COOH(aq) = CH3CH(OH)COO"(aq) + H+(aq) K= 1.4 x 10-4 5. Hydrogen chloride can be made...
can you please show steps for the first question and explain the answers for the other...
can you please show steps for the first question and explain
the answers for the other two questions?
1A. A solution of a 6.0 M solution of a weak acid is 0.16% ionized. What is the K, of the acid? (4 points) 13. Which of the following is a Lewis acid-base reaction? a. CH3Br + CH3Cl → CH3Cl + HBO b. •CH3 + .CI → CH3CI C. NaCl + AgNO3 → AgCl + NaNO3 d. Cl2 + PCl3 → PCI...
Question completion Status QUESTION 6 2 points Save Answer Below is a list of some weak acids Name Formula pka Molar Mass acetic acid HIC2H302) 4.76 60,052 butanoic acid HICH702) 18104 formic acid PHO) 3.75 46.024 heptanoic acid HC7H1302) 4.89 130.182 hexanoic acid 1102) 4 116.16 hydrocyanic acid HCN 9.21 27028 32 20.00 hydrofluoric acid HF lactic acid HIC3H503) 3.08 90.078 nitrous acid HINO2 3.25 47.018 octano acid HICOM1502) 489144208 HICH902) 4.84 102.13 pentanoic acid propanoic acid H502) 486 14.078...
TABLE 15.5 Acid lonization Constants (K) for Some Monoprotic Weak Acids at 25 °C Acid Formula Structural Formula lonization Reaction К. pk, = -log (2) Chlorous acid HCIO H-0-C=0 1.1 x 10-2 1.96 Stronger acids Nitrous acid HNOZ H-O-NO 5.6 x 10-4 HCIO2(aq) + H2011) = H30* (aq) + CO2 (aq) HNO2(aq) + H20(I) = H30+ (aq) + NO2 (aq) HF(aq) + H20(1) = H30* (aq) + F"(aq) 3.25 Hydrofluoric acid HF H-F 6.3 x 10-4 3.20 O Methanoic acid...
_1)If you want to have a buffer of pH 3.60 which of the following weak acids should you use to build your buffer? a)CH3COOH K, = 1.8 x 105 b) HCN K 6.2 x 10-10 HF K-6.8 x 10 d) HOCI K-2.9 x 10 474 2) What is a buffer solution? a@)a solution that resists changes in pH 4.2 b) a solution that increases in pH
Question 8 2 pts If you have 50.0 mL of a 0.010 M solution of each of the following weak acids which solution would expected to have the greatest osmotic pressure? HC2H302 Ka - 1.8 x 10-5 O HCN Ka = 4,9x 10-10 H3PO4 Ka = 7.5 x103 HF Ka-3.5 x 104
You work in a chemistry lab, and are asked to prepare 500 mL of a buffer solution with pH-3.20, The weak acid solution concentration in this buffer should be 0.250 M and salt is a solid. The following steps walk you through a step by step process of this preparation. a. Choose the proper weak acids for the buffer solution Table 1. Ionization constant Ka for some weak acids Name Hydrofluoric acid Nitrous acid Fulminic acid Acetic acid Hypochlorous acid...
TABLE 15.5 Acid lonization Constants (K) for Some Monoprotic Weak Acids at 25 °C Acid Formula Structural Formula lonization Reaction К. pk, = -log (2) Chlorous acid HCIO H-0-C=0 1.1 x 10-2 1.96 Stronger acids Nitrous acid HNOZ H-O-NO 5.6 x 10-4 HCIO2(aq) + H2011) = H30* (aq) + CO2 (aq) HNO2(aq) + H20(I) = H30+ (aq) + NO2 (aq) HF(aq) + H20(1) = H30* (aq) + F"(aq) 3.25 Hydrofluoric acid HF H-F 6.3 x 10-4 3.20 O Methanoic acid...
late for class please just
help with these dont have time to make more posts
4. The equilibrium constant values for a number of reactions are listed below. Indicate whether the products or reactants are favored. Reaction Which side is favored? NH3(aq) + H2O(l) 5 NH4+ (aq) + OH(aq) K = 5.0 x 1012 2 HBr 5 2 Hz Brz K = 5.8 x 10-18 CH3CH(OH)COOH(aq) = CH3CH(OH)COO"(aq) + H+(aq) K= 1.4 x 10-4 5. Hydrogen chloride can be made...
can you please show steps for the first question and explain
the answers for the other two questions?
1A. A solution of a 6.0 M solution of a weak acid is 0.16% ionized. What is the K, of the acid? (4 points) 13. Which of the following is a Lewis acid-base reaction? a. CH3Br + CH3Cl → CH3Cl + HBO b. •CH3 + .CI → CH3CI C. NaCl + AgNO3 → AgCl + NaNO3 d. Cl2 + PCl3 → PCI...
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