![1. Calculate the [H*] of a solution with a pH of 10.72 a. 5.25x10-4M b. 1.91x10-11M c. 1.07x10-4M d. 5.25x10-11M 2. Arsenic h](http://img.homeworklib.com/questions/3101def0-dc81-11ea-b62e-bd612851fe9f.png?x-oss-process=image/resize,w_560)
Please answer all questions correctly! i promise a thumbs up if they are right. Thanks
Homework Answers
Request Answer!
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Add Answer to:
Please answer all questions correctly! i promise a
thumbs up if they are right. Thanks
1....
Student Name Course/Section Date Instructor RELATED QUESTIONS 1. A buffer solution is prepared by making a...
Student Name Course/Section Date Instructor RELATED QUESTIONS 1. A buffer solution is prepared by making a solution 0.1M in NH, and 0.2M in NHACI (a) Write the equation for the ionization of NH, in water. (b) Write the expression for the ionization constant, K, for NHg. The value of K, at 25°C is 1.8 x 10 (c) Calculate the [OH-], the [H'), and the pH for this buffer solution. (d) Calculate the (OH), the [H), and the pH for 0.1M...
help me out, please! answer all the multiple choice. (15) A phosphate buffer solution is prepared by mixing 100. m...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
please help with this hw ?! Answer the Q. In the spaces below. Use the back...
please help with this hw ?!
Answer the Q. In the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO; c) H20 d) OH e) H3PO4 Ans. a). 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) CO32- b) HPO42. c) H2PO4 d)NH2 e) NH3 Ans. a) b) 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show how...
please answer 1 and both parts of 2 1. Which one of the following sets of...
please answer 1 and both parts
of 2
1. Which one of the following sets of compounds is not characteristic of a buffer? a. HNO3 with NaNO b. NaH POwith Na2HPO: C. NH; with NHACI d. CH3COOH with NaCH3COO 2. What is the pH of the following buffer solutions? a. 0.45 M NH3 and 0.55 M NH-CI. K. (NH3) = 1.8 x 105 b. 0.36 M HCOOH and 0.55 M KHCOO. K. (HCOOH) = 1.8 x 104
CHM 202F19 HW 9B Name Answer the q. in the spaces below. Use the back of...
CHM 202F19 HW 9B Name Answer the q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO; CHO DOH e) HPO4 Ansa) b) c) d) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) 0,2 b) HPO4? c) H2PO4 d) NH) e) NH3 Ans. a) _ d) e) 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4....
need help!! Use the data in the tables below. Show appropriate work for numerical calculations. K,...
need help!!
Use the data in the tables below. Show appropriate work for numerical calculations. K, values: HCI HNO) H.SO HSO, HPO HF HNO, HCOOH strong strong strong 13 x 10 7.5 x 10 17.1 x 10 4.5 x 10- 1.7 x 104 CH3COOH CsHsNH" H2CO3 H2PO4 NH, HCN IHCO, HPO4 1.8 x 10 5.9 x 10 4.2 x 10 6.2 x 10 5.6 x 10- 4.9 x 10 4.8 x 10-11 4.8 x 10-D Kip values: 8 CaCO3 CaF24...
1. Calculate the pH of the following solutions. Show all of your work. a. 0.0050 M...
1. Calculate the pH of the following solutions. Show all of your work. a. 0.0050 M nitric acid, HNO3 b. 0.50 M hydrocyanic acid, HCN Ka = 4.0 x 10-10 2. A student was given the following problem: Calculate the pH of a 0.50 Mama bromide (NHaBr) solution if the Kb of NH3 is 1.8 x 10. The student provided the fo work. Identify the error(s) and calculate the correct pH. NH; (aq) + H20 (1) = NH3 (aq) +...
CHM 202F19 HW 9B Name Answer the Q. in the spaces below. Use the back of the page if necessary. 1. Give the conjuga...
CHM 202F19 HW 9B Name Answer the Q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO3 c) H20 d) OH e) H3PO. Ans. a) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) CO32 b) HPO 2 c) H2PO. d)NH2 e) NH3 Ans. a) b) _ 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show...
please explain how you got all your answers 10. Calculate the pH of a 0.30 M...
please explain how you got all your answers
10. Calculate the pH of a 0.30 M formic acid solution. (K-1.8 x 10") Weak monoprotic acid. 11. Calculate the K, for a 0.050 M solution of HA (weak acid) if the pH = 4.65. 12. What is the pH of the solution which results from mixing 50.0 mL of 0.30 M HF(aq) and 50.0 mL of 0.30 M NaOH(aq) at 25C? (K. of F = 1.4 x 10) 13. Which of...
The correct answer is highlighted. I do not understand how the professor came up with this...
The correct answer is highlighted. I do not understand
how the professor came up with this answer.
Ch. 18 Values The following values will be useful for problems in this chapter. Acid Substance or Species K HF HNO2 CH3COOH HOCI HOB HOCN HCN H2SO4 Kn = 7.2 x 10-4 = 4.5 x 10-4 Ka = 1.8 x 10-5 K = 3.5 x 10-8 Ka = 2.5 x 10-9 K = 3.5 x 104 Ka = 4.0 x 10-10 Kai =...
Student Name Course/Section Date Instructor RELATED QUESTIONS 1. A buffer solution is prepared by making a solution 0.1M in NH, and 0.2M in NHACI (a) Write the equation for the ionization of NH, in water. (b) Write the expression for the ionization constant, K, for NHg. The value of K, at 25°C is 1.8 x 10 (c) Calculate the [OH-], the [H'), and the pH for this buffer solution. (d) Calculate the (OH), the [H), and the pH for 0.1M...
help me out, please! answer all the multiple
choice.
(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
please help with this hw ?!
Answer the Q. In the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO; c) H20 d) OH e) H3PO4 Ans. a). 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) CO32- b) HPO42. c) H2PO4 d)NH2 e) NH3 Ans. a) b) 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show how...
please answer 1 and both parts
of 2
1. Which one of the following sets of compounds is not characteristic of a buffer? a. HNO3 with NaNO b. NaH POwith Na2HPO: C. NH; with NHACI d. CH3COOH with NaCH3COO 2. What is the pH of the following buffer solutions? a. 0.45 M NH3 and 0.55 M NH-CI. K. (NH3) = 1.8 x 105 b. 0.36 M HCOOH and 0.55 M KHCOO. K. (HCOOH) = 1.8 x 104
CHM 202F19 HW 9B Name Answer the q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO; CHO DOH e) HPO4 Ansa) b) c) d) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) 0,2 b) HPO4? c) H2PO4 d) NH) e) NH3 Ans. a) _ d) e) 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4....
need help!!
Use the data in the tables below. Show appropriate work for numerical calculations. K, values: HCI HNO) H.SO HSO, HPO HF HNO, HCOOH strong strong strong 13 x 10 7.5 x 10 17.1 x 10 4.5 x 10- 1.7 x 104 CH3COOH CsHsNH" H2CO3 H2PO4 NH, HCN IHCO, HPO4 1.8 x 10 5.9 x 10 4.2 x 10 6.2 x 10 5.6 x 10- 4.9 x 10 4.8 x 10-11 4.8 x 10-D Kip values: 8 CaCO3 CaF24...
1. Calculate the pH of the following solutions. Show all of your work. a. 0.0050 M nitric acid, HNO3 b. 0.50 M hydrocyanic acid, HCN Ka = 4.0 x 10-10 2. A student was given the following problem: Calculate the pH of a 0.50 Mama bromide (NHaBr) solution if the Kb of NH3 is 1.8 x 10. The student provided the fo work. Identify the error(s) and calculate the correct pH. NH; (aq) + H20 (1) = NH3 (aq) +...
CHM 202F19 HW 9B Name Answer the Q. in the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO3 c) H20 d) OH e) H3PO. Ans. a) 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) CO32 b) HPO 2 c) H2PO. d)NH2 e) NH3 Ans. a) b) _ 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show...
please explain how you got all your answers
10. Calculate the pH of a 0.30 M formic acid solution. (K-1.8 x 10") Weak monoprotic acid. 11. Calculate the K, for a 0.050 M solution of HA (weak acid) if the pH = 4.65. 12. What is the pH of the solution which results from mixing 50.0 mL of 0.30 M HF(aq) and 50.0 mL of 0.30 M NaOH(aq) at 25C? (K. of F = 1.4 x 10) 13. Which of...
The correct answer is highlighted. I do not understand
how the professor came up with this answer.
Ch. 18 Values The following values will be useful for problems in this chapter. Acid Substance or Species K HF HNO2 CH3COOH HOCI HOB HOCN HCN H2SO4 Kn = 7.2 x 10-4 = 4.5 x 10-4 Ka = 1.8 x 10-5 K = 3.5 x 10-8 Ka = 2.5 x 10-9 K = 3.5 x 104 Ka = 4.0 x 10-10 Kai =...
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