What is the pH of an acidic mixture containing 0.005 M HBr and 0.025M HCN? HINT:...
What is the pH of an acidic mixture containing 0.005 M HBr and
0.025M HCN?
HINT: take into account the type of acids that make up the
mixture.
Which solution is the least acidic?
|
A. 3.0 M HNO3 |
||
|
B. 3.0 M HI |
||
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C. 3.0 M HClO |
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D. 2.0 M HCN and 2.0 M HF |
Calculate the pH of a basic solution made from 255 mg of pyridine (C5H5N) dissolved in 1L of water. The pKb for pyridine is 4.2.
Determine the pH of a solution that is 0.125M in CO32-; Kb = 1.8 × 10-4.
Consider the pKa values and identify the strongest conjugate base.
| Acid | pKa |
| H2SO3(aq) | 1.77 |
| HCOOH(aq) | 3.75 |
| HNO2(aq) | 3.37 |
| C6H5COOH(aq) | 4.20 |
|
A. HSO3-(aq) |
||
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B. NO2-(aq) |
||
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C. HCOO-(aq) |
||
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D. C6H5COO-(aq) |
Determine which anion is not neutral.
|
A. NO3- |
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B. Cl- |
||
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C. ClO- |
||
|
D. HSO4- |
Homework Answers
Add Answer to:
What is the pH of an acidic mixture containing 0.005 M HBr and
0.025M HCN?
HINT:...
1. Calculate the concentration of H3O+ for an aqueous solution with a pH of 1.2 A)...
1. Calculate the concentration of H3O+ for an aqueous solution with a pH of 1.2 A) 6.3 x 10-7M B ) 1.6 x 108 M. C) 1.0 x 10-14 M. D) 6.20 x 10-2 M E) 4.0 x 10-4M 2. Calculate the concentration of OH- for an aqueous solution with a pH of 13.8. A) 0.64 M B) 4.0 x 10-5M C) 1.5 x 10-5M D) 1.0 x 10-14 M E) 2.5 x 10-10 M 3. Which of the following...
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...
7. What is the pH of a solution containing 5.3 x the pH of a solution containing 53 105 M hydroxide ion concentratio...
7. What is the pH of a solution containing 5.3 x the pH of a solution containing 53 105 M hydroxide ion concentration a. 5.72 d.-4.27 b. 4.27 e.-9.72 C. 9.72 8. What is the H what is the pH of a solution containing o ly Macetic acid (K of acetic acid is 1.8 x 10") a. -0.77 d. 2.92 b. 1.98 e. 3.49 c. 2.22 -10). What is 9. One of the strongest acids known is called fluorosulfonic acid,...
7. What is the pH of a solution containing 5.3 x the pH of a solution containing 53 105 M hydroxide ion concentratio...
7. What is the pH of a solution containing 5.3 x the pH of a solution containing 53 105 M hydroxide ion concentration a. 5.72 d.-4.27 b. 4.27 e.-9.72 C. 9.72 8. What is the H what is the pH of a solution containing o ly Macetic acid (K of acetic acid is 1.8 x 10") a. -0.77 d. 2.92 b. 1.98 e. 3.49 c. 2.22 -10). What is 9. One of the strongest acids known is called fluorosulfonic acid,...
7. What is the pH of a solution containing 5.3 x 10s M hydroxide ion concentration?...
7. What is the pH of a solution containing 5.3 x 10s M hydroxide ion concentration? a. 5.72 d. -4.27 b. 4.27 e. -9.72 C. 9.72 8. What is the pH of a solution containing 6 mM acetic acid (Ka of acetic acid is 1.8 x 10) a. -0.77 d. 2.92 b. 1.98 e. 3.49 c. 2.22 9. One of the strongest acids known is called fluorosulfonic acid, HSO3F (pKa-10) . What the pOH of 1M of this acid? a....
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...
1. Calculate the concentration of H3O+ for an aqueous solution with a pH of 1.2 A) 6.3 x 10-7M B ) 1.6 x 108 M. C) 1.0 x 10-14 M. D) 6.20 x 10-2 M E) 4.0 x 10-4M 2. Calculate the concentration of OH- for an aqueous solution with a pH of 13.8. A) 0.64 M B) 4.0 x 10-5M C) 1.5 x 10-5M D) 1.0 x 10-14 M E) 2.5 x 10-10 M 3. Which of the following...
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...
7. What is the pH of a solution containing 5.3 x the pH of a solution containing 53 105 M hydroxide ion concentration a. 5.72 d.-4.27 b. 4.27 e.-9.72 C. 9.72 8. What is the H what is the pH of a solution containing o ly Macetic acid (K of acetic acid is 1.8 x 10") a. -0.77 d. 2.92 b. 1.98 e. 3.49 c. 2.22 -10). What is 9. One of the strongest acids known is called fluorosulfonic acid,...
7. What is the pH of a solution containing 5.3 x the pH of a solution containing 53 105 M hydroxide ion concentration a. 5.72 d.-4.27 b. 4.27 e.-9.72 C. 9.72 8. What is the H what is the pH of a solution containing o ly Macetic acid (K of acetic acid is 1.8 x 10") a. -0.77 d. 2.92 b. 1.98 e. 3.49 c. 2.22 -10). What is 9. One of the strongest acids known is called fluorosulfonic acid,...
7. What is the pH of a solution containing 5.3 x 10s M hydroxide ion concentration? a. 5.72 d. -4.27 b. 4.27 e. -9.72 C. 9.72 8. What is the pH of a solution containing 6 mM acetic acid (Ka of acetic acid is 1.8 x 10) a. -0.77 d. 2.92 b. 1.98 e. 3.49 c. 2.22 9. One of the strongest acids known is called fluorosulfonic acid, HSO3F (pKa-10) . What the pOH of 1M of this acid? a....
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...
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