Acid name pKa Conjugate base Conjugate base name Acid formula CH3COOH 4.75 CH3COO 9.25 acetic acid acetate ion C3H50(COOH)2COO- | 4.77 | C3H50(COOH)(COO-)2 dihydrogen citrate ion hydrogen citrate ion 9.23 butanoic acid CH3CH2CH2COOH 4.82 CH3CH2CH2COO butanoate ion 9.18 CH3CH2COOH 4.87 CH3CH2COO propanoic acid 9.13 propanoate ion 5.25 | C5H5N pyridinium ion C5H5NH+ pyridine carbonic acid носоон 6.37 HOCOO hydrogen carbonate ion 7.63 C3H50(COOH)(COO-)2 | | C3H50(COO-)s 7.19 SO32 6.40 7.60 hydrogen citrate ion citrate ion 6.81 hydrogen sulfite ion sulfite ion 7.20 HPO42- dihydrogen phosphate ion H2PO4 hydrogen phosphate ion 6.80 7.53 CIO hypochlorous acid HCIO hypochlorite ion 6.47 9.25 NH3 ammonia ammonium ion HCN 9.31 CN 4.69 hydrocyanic acid cyanide ion 10.00 C6H5O C6H5OH phenolate ion phenol 4.00 10.25CO32- hydrogen carbonate ion HOCOO 3.75 carbonate ion diethylammonium on (CH3CH2)2NH2+ CH3NH3+ CH3CH2CH2NH3+ 10.49 (CH3CH2)2NH 10.64 CH3NH2 diethylamine methylamine methylammonium ion 3.29 10.71CH3CH2CH2NH2 propylammonium ion propylamine dimethylammonium io (CH3)2NH2 10.77 (CH3)2NH dimethylamine 3.23 10.87 CH3CH2NH2 3.13 ethylammonium ion ethylamine triethylammonium ion CH3CH2)3NH+ 11.01 (CH3CH2)3N 2.38 PO4 2.99 triethylamine hydrogen phosphate ion HPO4 phosphate ion 1.62
Determine the pH (to two decimal places) of the following solutions. A table of pKa values can be found here. If the 5% approximation is valid, use the assumption to compute pH 8.95x10-2 M sodium hydrogen sulfite Submit Answer Incorrect. Tries 2/13 Previous Tries 9.21x10-3 M dichloroacetic acid Submit Answer Tries 0/13 6.03x103 M diethylamine Submit Answer Trie 0/13 7.80x10-3 M sodium oxalate Submit Answer Tries 0/13
Homework Answers
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pKa Conjugate base Acid formula Conjugate base name Acid name F3CCOOH 0.20 F3ccoo trifluoroacetic acid trifluoroacetate...
A buffer solution is prepared by mixing 15.5 mL of 0.0229 M pyridinium chloride with 73.8 mL of 0.888 M pyridine. A tabl...
A buffer solution is prepared
by mixing 15.5 mL of 0.0229 M pyridinium chloride with 73.8 mL of
0.888 M pyridine. A table of pKa values can be found
here.
1. Calculate the pH (to two decimal places) of this solution.
Assume the 5% approximation is valid and that the volumes are
additive.
Tries 0/13
2. Calculate the pH (to two decimal places) of the buffer solution
after the addition of 8.26 g of pyridine
(C5H5N) to the buffer solution...
Determine the pH of the solution (to 2 decimal points) after the addition of 11.7 mL...
Determine the pH of the solution (to 2 decimal points) after the
addition of 11.7 mL of 6.14 M hydrochloric acid (HCl) to 624 mL of
0.735 M phenylamine (aniline)
(C6H5NH2).
Assume that the volumes are additive and that the 5% approximation
is valid.
A table of pKa values can be found here.
Table 10.2: pKa and pKb values at 25 °C for some common weak acids and their conjugate bases Acid name trifluoroacetic acid trichloroacetic acid oxalic acid dichloroacetic...
What is the pH of a solution made by dissolving 4.8 g of K2CO3 and 6.6...
What is the pH of a solution made by dissolving 4.8 g of
K2CO3 and 6.6 g of KHCO3 in 500.
mL of water?
**ACID BASE TABLE** ->
refer to table for values
Acid Name Conjugate Acid ka pka Conjy Conjugate Base Base Name perchloric acid HCIO4 >>1 perchlorate ion hydrohalic acid HX (X=1,Br, CI) halide ion sulfuric acid >>1 hydrogen sulfate ion nitric acid >>1 nitrate ion H2804 HNO3 || 1307+ To coa >>1 <0 x1- >> RO HS044-...
stopн спанде Choose an appropriate weak acid and conjugate base from the list below to make 100 ml of a 0.100M buff...
stopн спанде Choose an appropriate weak acid and conjugate base from the list below to make 100 ml of a 0.100M buffer solution that has a pH of 7.4. Weak acid Acetic acid Phthalic acid Dihydrogen phosphate (monobasic) Monohrogen phosphate (dibasic) Carbonic acid Citrate Dihydrogen citrate (monobasic) Monohydrogen citrate (dibasic) K. 1.8 x 10 1.3 x 10 6.2 x 10 4.8 x 10 4.6 x 10 8.4 x 10° 1.8 x 10 4.0 x 10- In your notebook, show all...
ntifying Conjugate Acid-Base Pairs Part B Dihydrogen phosphate reacts with water to produce hydrogen phosphate ion...
ntifying Conjugate Acid-Base Pairs Part B Dihydrogen phosphate reacts with water to produce hydrogen phosphate ions and hydronium ions: H PO, +H20-HPO, +H2O Identify the conjugate acid-base pairs Drag each item to the appropriate bin. View Available Hints) Reset Help Base Conjugate acid in Part A, dihydrogen phosphate (H2PO,) was identified as a base In Part B. however, it was identified as may be more likely to act as one or the other, but ultimately its role as acid or...
Identifying Conjugate Acid-Base Pairs Phosphoric acid reacts with water to yield dihydrogen phosphate ions and hydronium...
Identifying Conjugate Acid-Base Pairs Phosphoric acid reacts with water to yield dihydrogen phosphate ions and hydronium ions: H,POs+H2O H2PO +H,0 Identify the conjugate acid-base pairs. Drag each item to the appropriate bin. View Available Hint(s) Reset Help но Н.РО, Н,РО, но Conjugate base Acid Вase Conjugate acid Identifying Conjugate Acid-Base Pairs Dihydrogen phosphate reacts with water to produce hydrogen phosphate ions and hydronium ions: H2PO H2O HPO,2+H0 Identify the conjugate acid-base pairs Drag each item to the appropriate bin. View...
Data Table 1: Tests with PH Paper and BTB ID # - Chemical Name & Formula...
Data Table 1: Tests with PH Paper and BTB ID # - Chemical Name & Formula pH BTB Color Acid or Base? Hypothesis: Acid or Base 11A - Acetic acid (CH3COOH) 11B - Nitric acid (HNO3) 11C - Sulfuric acid (H2SO4) 11D - Phosphoric acid (H3PO4) 11E - Sodium acetate (CH3COONa) 11F - Sodium bicarbonate (NaHCO3) 11G - Sodium dihydrogen phosphate (NaH2PO4) 11H - Sodium hydrogen sulfate (NaHSO4) 12A - Sodium hydrogen sulfite (NaHSO) 12B - Limewater (Ca(OH)2)
Data Table 1: Tests with PH Paper and BTB ID # - Chemical Name & Formula...
Data Table 1: Tests with PH Paper and BTB ID # - Chemical Name & Formula pH BTB Color Acid or Base? Hypothesis: Acid or Base 11A - Acetic acid (CH3COOH) 11B - Nitric acid (HNO3) 11C - Sulfuric acid (H2SO4) 11D - Phosphoric acid (H3PO4) 11E - Sodium acetate (CH3COONa) 11F - Sodium bicarbonate (NaHCO3) 11G - Sodium dihydrogen phosphate (NaH2PO4) 11H - Sodium hydrogen sulfate (NaHSO4) 12A - Sodium hydrogen sulfite (NaHSO) 12B - Limewater (Ca(OH)2)
Homework Question 8.16 Determine (or estimate) the pKa of an acid with an acidity constant K= 1 x 10^-6. Values in Ta...
Homework
Question 8.16 Determine (or
estimate) the pKa of an acid with an acidity constant K= 1 x 10^-6.
Values in Table 9.3 may be helpful.
Homework Question 8.16 Unanswered Determine (or estimate) the pKaof an acid with an acidity constant Ka=1x10-6. Values in Table 9.3 may be helpful. Type your response Table 8.3 Acidity Constants of Some Bronsted-Lowry Acids Acid, HA K pk Strong acids hydrolodic 2010 hydobromic acid hydrochloric acid sulfuric acid HUSO HIND nitric acid Weak acids...
2. (a) (i) Draw an arrow-pushing mechanism that illustrates the electron flow in the acid-base reaction...
2. (a) (i) Draw an arrow-pushing mechanism that illustrates the electron flow in the acid-base reaction below. Use the structures shown below in your arrow-pushing mechanism. (4pts for correct mechanism). (ii) Using pKa values indicated in Table 1.8 (round to nearest whole number) and estimate the equilibrium constant for this reaction (Keq). Show work which led to this value. (3pts for work, 1pt for correct Keq indicated). (iii) Draw a base (assuming the same acid provided below) that would reverse...
A buffer solution is prepared
by mixing 15.5 mL of 0.0229 M pyridinium chloride with 73.8 mL of
0.888 M pyridine. A table of pKa values can be found
here.
1. Calculate the pH (to two decimal places) of this solution.
Assume the 5% approximation is valid and that the volumes are
additive.
Tries 0/13
2. Calculate the pH (to two decimal places) of the buffer solution
after the addition of 8.26 g of pyridine
(C5H5N) to the buffer solution...
Determine the pH of the solution (to 2 decimal points) after the
addition of 11.7 mL of 6.14 M hydrochloric acid (HCl) to 624 mL of
0.735 M phenylamine (aniline)
(C6H5NH2).
Assume that the volumes are additive and that the 5% approximation
is valid.
A table of pKa values can be found here.
Table 10.2: pKa and pKb values at 25 °C for some common weak acids and their conjugate bases Acid name trifluoroacetic acid trichloroacetic acid oxalic acid dichloroacetic...
What is the pH of a solution made by dissolving 4.8 g of
K2CO3 and 6.6 g of KHCO3 in 500.
mL of water?
**ACID BASE TABLE** ->
refer to table for values
Acid Name Conjugate Acid ka pka Conjy Conjugate Base Base Name perchloric acid HCIO4 >>1 perchlorate ion hydrohalic acid HX (X=1,Br, CI) halide ion sulfuric acid >>1 hydrogen sulfate ion nitric acid >>1 nitrate ion H2804 HNO3 || 1307+ To coa >>1 <0 x1- >> RO HS044-...
stopн спанде Choose an appropriate weak acid and conjugate base from the list below to make 100 ml of a 0.100M buffer solution that has a pH of 7.4. Weak acid Acetic acid Phthalic acid Dihydrogen phosphate (monobasic) Monohrogen phosphate (dibasic) Carbonic acid Citrate Dihydrogen citrate (monobasic) Monohydrogen citrate (dibasic) K. 1.8 x 10 1.3 x 10 6.2 x 10 4.8 x 10 4.6 x 10 8.4 x 10° 1.8 x 10 4.0 x 10- In your notebook, show all...
ntifying Conjugate Acid-Base Pairs Part B Dihydrogen phosphate reacts with water to produce hydrogen phosphate ions and hydronium ions: H PO, +H20-HPO, +H2O Identify the conjugate acid-base pairs Drag each item to the appropriate bin. View Available Hints) Reset Help Base Conjugate acid in Part A, dihydrogen phosphate (H2PO,) was identified as a base In Part B. however, it was identified as may be more likely to act as one or the other, but ultimately its role as acid or...
Identifying Conjugate Acid-Base Pairs Phosphoric acid reacts with water to yield dihydrogen phosphate ions and hydronium ions: H,POs+H2O H2PO +H,0 Identify the conjugate acid-base pairs. Drag each item to the appropriate bin. View Available Hint(s) Reset Help но Н.РО, Н,РО, но Conjugate base Acid Вase Conjugate acid Identifying Conjugate Acid-Base Pairs Dihydrogen phosphate reacts with water to produce hydrogen phosphate ions and hydronium ions: H2PO H2O HPO,2+H0 Identify the conjugate acid-base pairs Drag each item to the appropriate bin. View...
Data Table 1: Tests with PH Paper and BTB ID # - Chemical Name & Formula pH BTB Color Acid or Base? Hypothesis: Acid or Base 11A - Acetic acid (CH3COOH) 11B - Nitric acid (HNO3) 11C - Sulfuric acid (H2SO4) 11D - Phosphoric acid (H3PO4) 11E - Sodium acetate (CH3COONa) 11F - Sodium bicarbonate (NaHCO3) 11G - Sodium dihydrogen phosphate (NaH2PO4) 11H - Sodium hydrogen sulfate (NaHSO4) 12A - Sodium hydrogen sulfite (NaHSO) 12B - Limewater (Ca(OH)2)
Data Table 1: Tests with PH Paper and BTB ID # - Chemical Name & Formula pH BTB Color Acid or Base? Hypothesis: Acid or Base 11A - Acetic acid (CH3COOH) 11B - Nitric acid (HNO3) 11C - Sulfuric acid (H2SO4) 11D - Phosphoric acid (H3PO4) 11E - Sodium acetate (CH3COONa) 11F - Sodium bicarbonate (NaHCO3) 11G - Sodium dihydrogen phosphate (NaH2PO4) 11H - Sodium hydrogen sulfate (NaHSO4) 12A - Sodium hydrogen sulfite (NaHSO) 12B - Limewater (Ca(OH)2)
Homework
Question 8.16 Determine (or
estimate) the pKa of an acid with an acidity constant K= 1 x 10^-6.
Values in Table 9.3 may be helpful.
Homework Question 8.16 Unanswered Determine (or estimate) the pKaof an acid with an acidity constant Ka=1x10-6. Values in Table 9.3 may be helpful. Type your response Table 8.3 Acidity Constants of Some Bronsted-Lowry Acids Acid, HA K pk Strong acids hydrolodic 2010 hydobromic acid hydrochloric acid sulfuric acid HUSO HIND nitric acid Weak acids...
2. (a) (i) Draw an arrow-pushing mechanism that illustrates the electron flow in the acid-base reaction below. Use the structures shown below in your arrow-pushing mechanism. (4pts for correct mechanism). (ii) Using pKa values indicated in Table 1.8 (round to nearest whole number) and estimate the equilibrium constant for this reaction (Keq). Show work which led to this value. (3pts for work, 1pt for correct Keq indicated). (iii) Draw a base (assuming the same acid provided below) that would reverse...
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