Homework Answers
9) The resulting solution is basic, since the acid is weak and the base is strong.
10) Option A. Since both substances are strong and a buffer is not created.
11) A) Neutral solution, as it does not hydrolyse.
B) Neutral solution, because it does not hydrolyze.
C) Basic solution, because it hydrolyzes:
CH3CO2- + H2O = HCH3CO2 + OH-
If you liked the answer, please rate it in a positive way, you would help me a lot, thank you.
Add Answer to:
9. When a weak monoprotic acid reacts with an equal number of moles of potassium hydroxide,...
The pH of an aqueous solution of 0.123 M potassium nitrite, KNO2 (aq), is . This...
The pH of an aqueous solution of 0.123 M potassium nitrite, KNO2 (aq), is . This solution is acidic, basic or neutral? Which of the following aqueous solutions are good buffer systems? 0.15 M nitrous acid + 0.18 M potassium nitrite 0.31 M hydrocyanic acid + 0.23 M potassium cyanide 0.26 M hydrochloric acid + 0.24 M sodium chloride 0.26 M ammonium nitrate + 0.36 M ammonia 0.20 M barium hydroxide + 0.22 M barium bromide Which of the following...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH =...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH = 2.3 at 25°C. a. [OH 1 - 2.0 * 10-12M : POH - 2.30 b. [OH 7 -2.0 * 10-11M: POH = 11.70 C[OH 7 -5.0 x 10-3 M : POH = 11.70 d. [OH ) - 2.0 x 10-12 M : POH = 11.70 e.[OH ) - 2.0*10-12M : POH -8.50 Which of the following solutions is a good buffer system? a. A...
1. A buffer solution is made by adding 0.30 moles of ammonium perchlorate (NH4ClO4) and 0.40...
1. A buffer solution is made by adding 0.30 moles of ammonium perchlorate (NH4ClO4) and 0.40 moles of ammonia to 1.0 L of water. If 0.050 mole of sodium hydroxide is added to 500.0 mL of this buffer solution what is the resultant pH (Kb (NH3 ) = 1.8 x 10-5) a. 4.21 b. 9.65 c. 11.34 d. 5.11 e. 8.38 2. A sample is 0.0010 M in Mg2+ and 0.0010 M in Pb2+. If CO32- ions are slowly added...
(3 points) A 0.0730 M solution of a monoprotic acid is 1.07% ionized. What is the...
(3 points) A 0.0730 M solution of a monoprotic acid is 1.07% ionized. What is the pH of the solution? Calculate the Ka of the acid. (2 points) The pH of a 0.025 M solution of a monoprotic acid is 3.21. What is the Ka value for the acid? (2 points) Determine the percent ionization of a 0.0028 M HA solution. (Ka of HA = 1.4 x 10-9) (4 points) Lysine is triprotic amino acid (separately loses three H’s in...
D Question 6 1 pts When equal volumes of the solutions are combined, which of the...
D Question 6 1 pts When equal volumes of the solutions are combined, which of the following produces a solution with the largest buffer capacity? 10 M HNO3 and 1.0 M NaOH O 1.0 M NaF and 1.0 M NaOH O 1.0MHF and 1.0 M NaOH O2.0 M HNO3 and 2.0 M LINO3 O 1.0M HF and 1.0 M LIF 1 pts Question 7 Equal volumes of 0.50 MHBr and 0.50 M NH3 are mixed together. The resunting solution can...
A. Answer the following questions considering the 4 aqueous solutions below. Each contains 100.0 mL of...
A. Answer the following questions considering the 4 aqueous solutions below. Each contains 100.0 mL of the following solutions: Solution A = 0.10 M HBr Solution B = 0.10 M HNO2 Solution C = 0.10 M NaOH Solution D = 0.10 M NH3 Fill in the blanks with GT (greater than), ET (for less than) or EQ (for equal to). 1. ________ pH of A pH of B. 2. ________ pH of B ____________ 1. 3. ________ pH of C...
7. Choose the best answer for an aqueous solution labeled "0.10 M sodium hydroxide," A) the...
7. Choose the best answer for an aqueous solution labeled "0.10 M sodium hydroxide," A) the pH is greater than 7 B) the pH is less than 7 C) the pH = 1 D) the pH = 7 E) the pH = 13 8. Which one of the following salts gives an acidic aqueous solution? A) LINO3 B) CsBr C) Col2 D) Mg(SO3)2 E) NaF 9. Which one of the following salts gives a basic aqueous solution? A) Fe(NO3)3 B)...
1) Which of the following aqueous solutions are good buffer systems? . a. 0.29 M hydroiodic...
1) Which of the following aqueous solutions are good buffer systems? . a. 0.29 M hydroiodic acid + 0.20 M sodium iodide . b. 0.12 M barium hydroxide + 0.29 M barium chloride . c. 0.14 M nitrous acid + 0.12 M potassium nitrite . d. 0.34 M ammonium nitrate + 0.36 M ammonia . e. 0.31 M hydrofluoric acid + 0.29 M potassium fluoride . 2)A solution contains 0.486 M NH4I and 0.480 M ammonia. The pH of this...
36) Which one of the following is not a strong acid? (or a weak electrolyte?) a) HNO )HCI HI )HF e) HCIO Answer: 37) The is the conjugate species that remains after an acid donates a proton is ca...
36) Which one of the following is not a strong acid? (or a weak electrolyte?) a) HNO )HCI HI )HF e) HCIO Answer: 37) The is the conjugate species that remains after an acid donates a proton is called its conjugate base. What base of the hydronium ion, HO? B)HO C)HO D)H E HO'has no conjugate base. Answer: acid-base pair? 38) For the reaction shown below, which of the following is a conjugate acid A)CHsN, H:0 B) CsH,N, CsH,NH' C)...
phoric acid reacts with potassium hydroxide as indicated by the follewing reaction. If 1se. 0.200 M...
phoric acid reacts with potassium hydroxide as indicated by the follewing reaction. If 1se. 0.200 M H,PO is mixed with 175 ml. of 0 300 M KOH 10 mol u po ol KOH mol H O Changs After Reaction What is the molarity of the reagent in excess? A. 0.161 M B. 0.0538 M C 0.200 MM D. 0.0385 M F 0.09 11. What is the molarity of a calcium hydroxide solution if 25.05 ml. CatOH) completely react 0.512 g...
Calculate the hydroxide ion concentration and the POH in an aqueous solution with a pH = 2.3 at 25°C. a. [OH 1 - 2.0 * 10-12M : POH - 2.30 b. [OH 7 -2.0 * 10-11M: POH = 11.70 C[OH 7 -5.0 x 10-3 M : POH = 11.70 d. [OH ) - 2.0 x 10-12 M : POH = 11.70 e.[OH ) - 2.0*10-12M : POH -8.50 Which of the following solutions is a good buffer system? a. A...
D Question 6 1 pts When equal volumes of the solutions are combined, which of the following produces a solution with the largest buffer capacity? 10 M HNO3 and 1.0 M NaOH O 1.0 M NaF and 1.0 M NaOH O 1.0MHF and 1.0 M NaOH O2.0 M HNO3 and 2.0 M LINO3 O 1.0M HF and 1.0 M LIF 1 pts Question 7 Equal volumes of 0.50 MHBr and 0.50 M NH3 are mixed together. The resunting solution can...
A. Answer the following questions considering the 4 aqueous solutions below. Each contains 100.0 mL of the following solutions: Solution A = 0.10 M HBr Solution B = 0.10 M HNO2 Solution C = 0.10 M NaOH Solution D = 0.10 M NH3 Fill in the blanks with GT (greater than), ET (for less than) or EQ (for equal to). 1. ________ pH of A pH of B. 2. ________ pH of B ____________ 1. 3. ________ pH of C...
7. Choose the best answer for an aqueous solution labeled "0.10 M sodium hydroxide," A) the pH is greater than 7 B) the pH is less than 7 C) the pH = 1 D) the pH = 7 E) the pH = 13 8. Which one of the following salts gives an acidic aqueous solution? A) LINO3 B) CsBr C) Col2 D) Mg(SO3)2 E) NaF 9. Which one of the following salts gives a basic aqueous solution? A) Fe(NO3)3 B)...
36) Which one of the following is not a strong acid? (or a weak electrolyte?) a) HNO )HCI HI )HF e) HCIO Answer: 37) The is the conjugate species that remains after an acid donates a proton is called its conjugate base. What base of the hydronium ion, HO? B)HO C)HO D)H E HO'has no conjugate base. Answer: acid-base pair? 38) For the reaction shown below, which of the following is a conjugate acid A)CHsN, H:0 B) CsH,N, CsH,NH' C)...
phoric acid reacts with potassium hydroxide as indicated by the follewing reaction. If 1se. 0.200 M H,PO is mixed with 175 ml. of 0 300 M KOH 10 mol u po ol KOH mol H O Changs After Reaction What is the molarity of the reagent in excess? A. 0.161 M B. 0.0538 M C 0.200 MM D. 0.0385 M F 0.09 11. What is the molarity of a calcium hydroxide solution if 25.05 ml. CatOH) completely react 0.512 g...
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