Determine the pH (to two decimal places) of the following solutions. If the 5% approximation is...
Determine the pH (to two decimal places) of the following solutions. If the 5% approximation is valid, use the assumption to compute pH.
8.72×10-3 M sodium hydrogen sulfate
pKa hydrogen sulfate ion is 1.92
8.73×10-3 M trifluoroacetic acid
pKa trifluoroacetic acid is 0.20
8.20×10-3 M ethylamine
pKa ethylammonium ion is 10.87
2.51×10-1 M sodium nitrite
pKa nitrous acid is 3.37
Homework Answers
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Determine the pH (to two decimal places) of the following
solutions. If the 5% approximation is...
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...
Determine the pH (to two decimal places) of the following solutions. A table of pKa values...
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. 6.80×10-3 M butanoic acid Tries 0/13 9.74×10-1 M formic acid Tries 0/13 8.47×10-3 M methylamine Tries 0/13 6.59×10-3 M triethylamine
pKa Conjugate base Acid formula Conjugate base name Acid name F3CCOOH 0.20 F3ccoo trifluoroacetic acid trifluoroacetate...
pKa Conjugate base Acid formula Conjugate base name Acid name F3CCOOH 0.20 F3ccoo trifluoroacetic acid trifluoroacetate ion 13.80 Cl3CCOOH 13.34 0.66 Cl3CCOO trichloroacetic acid trichloroacetate ion HOOCCOOH 1.23 HOOCCOO oxalic acid hydrogen oxalate ion 12.77 Cl2HCCOOH 12.70 dichloroacetic acid 1.30 Cl2HCCOO dichloroacetate ion H2SO3 12.23 1.77 HSO3 sulfurous acid hydrogen sulfite ion 1.92SO42- HSO4 hydrogen sulfate ion sulfate ion 12.08 HCIO2 1.95 CI02 chlorous acid chlorite ion 2.12 H2PO.4 phosphoric acid H3PO dihydrogen phosphate ion 11.88 CIH2CCOOH 2.87 CIH2CCOO 11.13...
Determine the pH (to two decimal places) of the following solutions. A table of pKa values can be found here. If the 5%...
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. 6.80×10-3 M butanoic acid Tries 0/13 9.74×10-1 M formic acid Tries 0/13 8.47×10-3 M methylamine Tries 0/13 6.59×10-3 M triethylamine
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 (to two decimal places) of a solution prepared by adding 239 mL of...
Determine the pH (to two decimal places) of a solution prepared by adding 239 mL of 0.750 M sodium dihydrogen citrate (NaC3H5O(COOH)2COO) to 3.99 g of sodium hydrogen citrate (Na2C3H5O(COOH)(COO)2). Assume the volume of the solution does not change and that the 5% approximation is valid. pKa=4.77
QUESTION 1 Determine the pH (to two decimal places) of a solution prepared by adding 93.9...
QUESTION 1 Determine the pH (to two decimal places) of a solution prepared by adding 93.9 ml. of 0 271 M formic acid (HCO2H) to 40.3 g of sodium formato (NaCo2H). Assume the volume of the solution does not change and that the 5% approximation is valid The pka of formic acid is 3.75.
1) Can the five percent approximation be applied in determining the pH of the following solutions?...
1) Can the five percent approximation be applied in determining the pH of the following solutions? 2.10×10-4 M citric acid pka 3.13 9.99×10-3 M phosphoric acid pka 2.12 3.19×10-1 M propylammonium ion pka 10.71 8.88×10-4 M diethylammonium ion pka 10.77 2) Calculate the pOH (to two decimal places) for the following: 1.95×10-3 M Na2O
Determine the pH to two deci al places of the following solutions. A table of p...
Determine the pH to two deci al places of the following solutions. A table of p a values can be o n ere the 5% approximation svaid use the assumption to compute h 4.18x10 1 M hypochlorous acid ???? ??. Tries 1/3????? 8.91×10-2 M methylammonium chloride ???? Tries 0/3 9.59x101 M sodium lactate ???? Tries 0/3 2.96×10-3 M sodium sulfite ???? Tries 0/3
Determine the pH of the solution (to 2 decimal points) after the addition of 73.3 mL...
Determine the pH of the solution (to 2 decimal points) after the addition of 73.3 mL of 0.0154 M perchloric acid (HClO4) to 975 mL of 0.0517 M sodium hydrogen citrate (Na2C3H5O(COOH)(COO)2). Assume that the volumes are additive and that the 5% approximation is valid. A table of pKa values can be found here.
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...
pKa Conjugate base Acid formula Conjugate base name Acid name F3CCOOH 0.20 F3ccoo trifluoroacetic acid trifluoroacetate ion 13.80 Cl3CCOOH 13.34 0.66 Cl3CCOO trichloroacetic acid trichloroacetate ion HOOCCOOH 1.23 HOOCCOO oxalic acid hydrogen oxalate ion 12.77 Cl2HCCOOH 12.70 dichloroacetic acid 1.30 Cl2HCCOO dichloroacetate ion H2SO3 12.23 1.77 HSO3 sulfurous acid hydrogen sulfite ion 1.92SO42- HSO4 hydrogen sulfate ion sulfate ion 12.08 HCIO2 1.95 CI02 chlorous acid chlorite ion 2.12 H2PO.4 phosphoric acid H3PO dihydrogen phosphate ion 11.88 CIH2CCOOH 2.87 CIH2CCOO 11.13...
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...
QUESTION 1 Determine the pH (to two decimal places) of a solution prepared by adding 93.9 ml. of 0 271 M formic acid (HCO2H) to 40.3 g of sodium formato (NaCo2H). Assume the volume of the solution does not change and that the 5% approximation is valid The pka of formic acid is 3.75.
Determine the pH to two deci al places of the following solutions. A table of p a values can be o n ere the 5% approximation svaid use the assumption to compute h 4.18x10 1 M hypochlorous acid ???? ??. Tries 1/3????? 8.91×10-2 M methylammonium chloride ???? Tries 0/3 9.59x101 M sodium lactate ???? Tries 0/3 2.96×10-3 M sodium sulfite ???? Tries 0/3
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