Homework Answers
Since the NH2 (basic) group has been protonated but carboxylic acid remains undissociated, the ph must be acidic and therefore below 7. The only possible answer is pH = 3
Add Answer to:
Question 2 2 pts What is the most likely pH of the solution that this njolecule...
Question 30 2 pts A. If the pH of a solution is 3.00, the solution is...
Question 30 2 pts A. If the pH of a solution is 3.00, the solution is [Select] B. If [OH-] = 6.5 x 10-3 M, the solution is [Select] Question 31 2 pts Match the correct conjugate base to each weak acid: 1. H,Coz (Select) 2. HF [Select] 3. acetic acid (Select] 4. HNO2 (Select] Possible coniugate bases:
Question 39 2 pts Which of the following changes is most likely to decrease the reaction...
Question 39 2 pts Which of the following changes is most likely to decrease the reaction rate for the chemical reaction? 2CO(g) + O2(g) → 2CO2(g) O adding a catalyst to the reaction mixture adding twice as much O2 to the reaction mixture O removing some CO from the reaction mixture tripling the temperature of the reaction mixture Question 40 2 pts If two aqueous solutions with concentrations of 0.3 M sugar and 0.5 M sugar respectively are separated by...
Question 3 1 pts What is the most likely product at the end of the following...
Question 3 1 pts What is the most likely product at the end of the following reaction sequence? OH 1. H2SO4/heat 2. HBr Br Br Br Br B Br Br Br E D
Question 5 of 12 Submit The pH of an acidic solution is 5.57. What is POH?...
Question 5 of 12 Submit The pH of an acidic solution is 5.57. What is POH? 1 4 7 +/- 2 5 8 : 3 6 9 0 x 10 21:19 Question 6 of 12 Submit Rank the following in order of most acidic to least acidic. Solution X pH = 8.50 Solution Y pOH = 4.30 Solution Z [OH-] = 4.2 x 10-9 M A) Z > X > Y B) Y > > C)Y>Z> D) X > Y>Z
3. Based on your answer in 2. select the most likely reaction pathway. Explain how the...
3. Based on your answer in 2. select the most likely reaction pathway. Explain how the substitution mechanism forms the product structure(s) shown. 2points А, H Br off and add NH toi O position because it Would Rick Ph Ph Ph- B H NH2 Ph Ph + NH 4. Identify the reaction components and solvents as more soluble in the aqueous (A) or organic (O) layer during separation of substitution and protonation steps. 3 pts Br HN НN CIO NH3...
Which of the following salts is most likely to form an aqueous solution having the pH...
Which of the following salts is most likely to form an aqueous solution having the pH = 10.94? LiBr Zn(NO3)2 9 КСIO, NaCN NHACI
Question 2 2/2 pts If the pka of HCHO2 is 3.74 and the pH of an...
Question 2 2/2 pts If the pka of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.89, which of the following is TRUE? It is not possible to make a buffer of this pH from HCHO2 and NaCHO2. [HCHO2] = [NaCHO2] [HCHO2] >>[NaCHO2] [HCHO2] < [NaCHO2] [HCHO2] > [NaCHO2] Question 3 1.33/2 pts Acid #1 has a pka of 3.15 Acid #2 has a pka of 3.65 Acid #3 has a pka of 4.23 Acid #4 has...
8. (4 pts) What is the pH of a 0.35 M solution of aqueous ammonia, NH?...
8. (4 pts) What is the pH of a 0.35 M solution of aqueous ammonia, NH? (Ko for ammonia is 1.8 x 10). L 9. (5 pts) The pH of a 0.18 M solution of a weak acid, HA, is 2.85. What would be the percent ionization in a 1.80 M solution of this acid?
Question 12 7 pts What is the final concentration of a solution prepared by taking 30.0...
Question 12 7 pts What is the final concentration of a solution prepared by taking 30.0 mL of 3.0 M potassium sulfite, K2SO3, and diluting it by adding 84.3 mL of water? HINT: What is the final volume of solution? Question 13 7 pts What is the pH of a 0.71 M HCl solution? Hint: Remember, for a strong acid, the acid concentration is the H+ concentration Question 14 7 pts
D Question 25 Calculate the pH of a 0.10 M CH3NH,Cl solution. Ky(CH NH) - 4.4x104...
D Question 25 Calculate the pH of a 0.10 M CH3NH,Cl solution. Ky(CH NH) - 4.4x104 5.82 943 Сосоо 4.36 8.18 Question 26 5 pts When a strong acid is added to a strong base in a titration, what is expected at the equivalence point? A acidic solution from the conjugate acid of the strong base A neutral solution with a pH - 7 A acidic solution from the strong acid A basic solution from the strong base A basic...
Question 30 2 pts A. If the pH of a solution is 3.00, the solution is [Select] B. If [OH-] = 6.5 x 10-3 M, the solution is [Select] Question 31 2 pts Match the correct conjugate base to each weak acid: 1. H,Coz (Select) 2. HF [Select] 3. acetic acid (Select] 4. HNO2 (Select] Possible coniugate bases:
Question 39 2 pts Which of the following changes is most likely to decrease the reaction rate for the chemical reaction? 2CO(g) + O2(g) → 2CO2(g) O adding a catalyst to the reaction mixture adding twice as much O2 to the reaction mixture O removing some CO from the reaction mixture tripling the temperature of the reaction mixture Question 40 2 pts If two aqueous solutions with concentrations of 0.3 M sugar and 0.5 M sugar respectively are separated by...
Question 3 1 pts What is the most likely product at the end of the following reaction sequence? OH 1. H2SO4/heat 2. HBr Br Br Br Br B Br Br Br E D
Question 5 of 12 Submit The pH of an acidic solution is 5.57. What is POH? 1 4 7 +/- 2 5 8 : 3 6 9 0 x 10 21:19 Question 6 of 12 Submit Rank the following in order of most acidic to least acidic. Solution X pH = 8.50 Solution Y pOH = 4.30 Solution Z [OH-] = 4.2 x 10-9 M A) Z > X > Y B) Y > > C)Y>Z> D) X > Y>Z
3. Based on your answer in 2. select the most likely reaction pathway. Explain how the substitution mechanism forms the product structure(s) shown. 2points А, H Br off and add NH toi O position because it Would Rick Ph Ph Ph- B H NH2 Ph Ph + NH 4. Identify the reaction components and solvents as more soluble in the aqueous (A) or organic (O) layer during separation of substitution and protonation steps. 3 pts Br HN НN CIO NH3...
Which of the following salts is most likely to form an aqueous solution having the pH = 10.94? LiBr Zn(NO3)2 9 КСIO, NaCN NHACI
Question 2 2/2 pts If the pka of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.89, which of the following is TRUE? It is not possible to make a buffer of this pH from HCHO2 and NaCHO2. [HCHO2] = [NaCHO2] [HCHO2] >>[NaCHO2] [HCHO2] < [NaCHO2] [HCHO2] > [NaCHO2] Question 3 1.33/2 pts Acid #1 has a pka of 3.15 Acid #2 has a pka of 3.65 Acid #3 has a pka of 4.23 Acid #4 has...
8. (4 pts) What is the pH of a 0.35 M solution of aqueous ammonia, NH? (Ko for ammonia is 1.8 x 10). L 9. (5 pts) The pH of a 0.18 M solution of a weak acid, HA, is 2.85. What would be the percent ionization in a 1.80 M solution of this acid?
Question 12 7 pts What is the final concentration of a solution prepared by taking 30.0 mL of 3.0 M potassium sulfite, K2SO3, and diluting it by adding 84.3 mL of water? HINT: What is the final volume of solution? Question 13 7 pts What is the pH of a 0.71 M HCl solution? Hint: Remember, for a strong acid, the acid concentration is the H+ concentration Question 14 7 pts
D Question 25 Calculate the pH of a 0.10 M CH3NH,Cl solution. Ky(CH NH) - 4.4x104 5.82 943 Сосоо 4.36 8.18 Question 26 5 pts When a strong acid is added to a strong base in a titration, what is expected at the equivalence point? A acidic solution from the conjugate acid of the strong base A neutral solution with a pH - 7 A acidic solution from the strong acid A basic solution from the strong base A basic...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago