Homework Answers
pH of weak acid is given by pH = 1/2(pka-logC)
= 1/2(-log(Ka)-log(C)
Given that the pH of the acrylic acid = 2.48 and concentration of the acid = 0.20 M
2.48 = 1/2(-log(Ka)-log(0.20)
Ka of acrylic acid = 5.48*10^-5
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Acrylic acid whose formula is HC 3 H 3 O 2 is used in the
manufacture...
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6%...
3. Acrylic acid, used in the manufacture of some plastics, has the composition 50.0% C, 5.6% H, and 44.4% O by mass. What is the empirical formula? 4. Urea contains C, H, N, and O. A 2.54 gram sample of urea is found to contain 0.51 g carbon, 0.17 g of hydrogen, and 1.19 g of nitrogen. What is the empirical formula of urea? 5. Putrescine, a substance produced by decaying animals, is composed of 54.5 % carbon, 13.6% hydrogen,...
HC,H3O2(aq) + H20() 근 H,O+(aq) + C2H30,-(aq) hedissaciation of ethanoic acid, HC,H,0,(aq), is represented above. A...
HC,H3O2(aq) + H20() 근 H,O+(aq) + C2H30,-(aq) hedissaciation of ethanoic acid, HC,H,0,(aq), is represented above. A student is given the task of determining the value of K, for HC H,O(aa) using two different experimental procedures (a) The student is first asked to prepare 100.0 ml of 0.115 M HC,H,0 (aq) using a 2.000 M standard solution (1) Calculate the volume, in mL, ot 2.000 M HC HO aq) the student needs to prepare I 0.115 M HC H,O (ag) (i)...
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...
The pH of a 1.4 M solution of butanoic acid (HC,H,O2) is measured to be 2.34....
The pH of a 1.4 M solution of butanoic acid (HC,H,O2) is measured to be 2.34. Calculate the acid dissociation constant K, of butanoic acid. Round your answer to 2 significant digits. K -0 2 Order these chemical species by increasing pH of an 0.1 M aqueous solution of each. That is, imagine making an 0.1 M solution of each species. Select I next to the species that makes the solution with the lowest pH. Select 2 next to the...
Now calculate the [H+] and pH of a 0.00725 M solution of nitrous acid. Nitrous acid...
Now calculate the [H+] and pH of a 0.00725
M solution of nitrous acid.
Nitrous acid (HNO2) is a weak acid that partially dissociates as follows, with a Ka = 0.0004266: HNO2 + H20 + H30+ + NO2 a) Calculate the [h+] and pH of a 1.73 M solution of nitrous acid. [H+]=49) 0.0270 b) pH = 49 1.57 c) Now calculate the [H+] and pH of a 0.00725 M solution of nitrous acid. 49) 0.0016 d) 49 1.7
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...
The pH of an aqueous solution of 0.450 M acetylsalicylic acid (aspirin), HC,H,O4, is
The pH of an aqueous solution of 0.450 M acetylsalicylic acid (aspirin), HC,H,O4, is
The pH of a 0.87 M solution of benzoic acid (HC,H,CO2) is measured to be 2.13...
The pH of a 0.87 M solution of benzoic acid (HC,H,CO2) is measured to be 2.13 Calculate the acid dissociation constant Ka of benzoic acid. Round your answer to 2 significant digits. I Don't Know Submit
6. b) A student mixes 8.203 g of NaC,H,O, with 100 mL of 1.0 M HC,H,O2,...
6. b) A student mixes 8.203 g of NaC,H,O, with 100 mL of 1.0 M HC,H,O2, what is the pH of the buffer? (4 pts) Wall Co, Hº 3) NaHCO₃ H2O H₂CO NOCH ka 2.22x /у- PO4-р 2.22x 100 = [071%.1 [ot] =4,7x10-S 14 Potter pOH = -log[ott 14-4.32-1 OH = 4,32 (pH=9.631 222 x 10 8 b) If you add 5.0 mL of 0.5 M NaOH solution to 20.0 ml to the buffer above, what is the pH of...
Propionic acid, C2H5CO2H (Ka = 1.34 × × 10^−5), is used in the manufacture of calcium...
Propionic acid, C2H5CO2H (Ka = 1.34 × × 10^−5), is used in the manufacture of calcium propionate, a food preservative. What is the pH of a 0.698-M solution of C2H5CO2H?
HC,H3O2(aq) + H20() 근 H,O+(aq) + C2H30,-(aq) hedissaciation of ethanoic acid, HC,H,0,(aq), is represented above. A student is given the task of determining the value of K, for HC H,O(aa) using two different experimental procedures (a) The student is first asked to prepare 100.0 ml of 0.115 M HC,H,0 (aq) using a 2.000 M standard solution (1) Calculate the volume, in mL, ot 2.000 M HC HO aq) the student needs to prepare I 0.115 M HC H,O (ag) (i)...
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...
The pH of a 1.4 M solution of butanoic acid (HC,H,O2) is measured to be 2.34. Calculate the acid dissociation constant K, of butanoic acid. Round your answer to 2 significant digits. K -0 2 Order these chemical species by increasing pH of an 0.1 M aqueous solution of each. That is, imagine making an 0.1 M solution of each species. Select I next to the species that makes the solution with the lowest pH. Select 2 next to the...
Now calculate the [H+] and pH of a 0.00725
M solution of nitrous acid.
Nitrous acid (HNO2) is a weak acid that partially dissociates as follows, with a Ka = 0.0004266: HNO2 + H20 + H30+ + NO2 a) Calculate the [h+] and pH of a 1.73 M solution of nitrous acid. [H+]=49) 0.0270 b) pH = 49 1.57 c) Now calculate the [H+] and pH of a 0.00725 M solution of nitrous acid. 49) 0.0016 d) 49 1.7
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...
The pH of an aqueous solution of 0.450 M acetylsalicylic acid (aspirin), HC,H,O4, is
The pH of a 0.87 M solution of benzoic acid (HC,H,CO2) is measured to be 2.13 Calculate the acid dissociation constant Ka of benzoic acid. Round your answer to 2 significant digits. I Don't Know Submit
6. b) A student mixes 8.203 g of NaC,H,O, with 100 mL of 1.0 M HC,H,O2, what is the pH of the buffer? (4 pts) Wall Co, Hº 3) NaHCO₃ H2O H₂CO NOCH ka 2.22x /у- PO4-р 2.22x 100 = [071%.1 [ot] =4,7x10-S 14 Potter pOH = -log[ott 14-4.32-1 OH = 4,32 (pH=9.631 222 x 10 8 b) If you add 5.0 mL of 0.5 M NaOH solution to 20.0 ml to the buffer above, what is the pH of...
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