Homework Answers
Add Answer to:
Critical Skills #9 (Acid-Base Equilibria) Due: 6 pm Monday March 30 upload to Gradescope Class time:...
Critical Skills 9 Acid-Base Equilibria) Due: 6 pm Monday March 30 upload to Gradescope Class time:...
Critical Skills 9 Acid-Base Equilibria) Due: 6 pm Monday March 30 upload to Gradescope Class time: 9:30 11:00 2:00 (from back of page) 1. Consider the conjugate acid-base pair NHA and NH, a. Write the acid dissociation (ionization) reaction for NHA" in water. Hint: NH."(aq) + HOME? Label each conjugate acid-base pair. b. Write the expression for equilibrium constant for this reaction ( ?) c. Write the base dissociation (Ionization) reaction for NH, in water. Hint: Nyaq) + HOS Label...
Determine the volume you would need of each solution (acid/base and conjugate) to make a buffer...
Determine the volume you would need of each solution (acid/base and conjugate) to make a buffer with a specific pH. Please only use the acids, bases and salts from the table on page 87 in the lab manual. See below for assigned values, each person will be calculating volumes needed for an acidic buffer and a basic buffer. Chart from page 87 List 0.10 M CH,NH, 9.75 the 0.10 M NHỰC H. " List E 0.10 M HCOOH K -...
CHE 172 Acid-Base Equilibrium Worksheet 1. Identify the conjugate pairs in the following reaction: HC2H302(aq) +...
CHE 172 Acid-Base Equilibrium Worksheet 1. Identify the conjugate pairs in the following reaction: HC2H302(aq) + H2O + H20*24) + CH3O2 (aq) 2. Based on the Kb of the following weak bases, which is the strongest base? C6H5NH2 HONH2 H2NNH2 C2H5NH2 Kb = 4.3x10-10 Ko = 1.1x10-8 Kb = 1.3x106 Kb = 6.4x104 Which has the strongest conjugate acid? 3. Calculate the pH of the following solutions: a. 0.25M HBO b. 0.25M Ba(OH)2 C. 0.25M HCN (K. = 5.00x10-10) d....
Analytical i. As the ionic strength, μ +0, activity coefficient, γ activity - The pH of...
Analytical
i. As the ionic strength, μ +0, activity coefficient, γ activity - The pH of a 3.22 x 102 M solution of Sr(OH)2 is ii. The activity coefficient of Fe3t at μ = 0.075 (aFe"-o9 nm) is Write the ACCURATE expressions for the equilibrium constants, K, for the reaction below in terms of activity coefficients and concentrations. v. CaF2(s) + 2 H2O() Ca2"(aq) + 2 HF (aq) + 2 OH (aq) v. Which of the following is the strangest...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base and acid formed. HSO3-(aq) + CH3NH3(aq) ------ H2SO3(aq) + CH3NH2(aq) 2. Write the formulae for the conjugate acids of: 1. a) C2042: the oxalate ion. 2.b) C6H5NH2, aniline. 3.c)NH2OH, hydroxylamine. (Use above question as a guide for where to put the H.) 3. Calculate the molarity of OH' in solutions with the following concentrations of H30*: a) 0.020 mol LP b) 1.0 x 10-5...
When dealing with buffer systems, we often use the acid reaction to determine the equilibrium and...
When dealing with buffer systems, we often use the acid reaction to determine the equilibrium and set up the ICE table. The most common experimental method used to study acid-base systems is titration, which studies the stoichiometric addition of the acid to a base solution or the base to an acid solution to determine the value of K, or K, The value of the pK, or pK, is essential to the understanding of the buffer system, where pK, = -log...
Problem Set 14 CHEM 1252 November 4, 2019 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-...
Problem Set 14 CHEM 1252 November 4, 2019 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-15,17,19,21,24,28-31,35,37,41,43,45,47 1. Acetic acid (HCO,H) has k, = 1.8 x 10- and acetate (HCO3") has ke -5.6 x 10-10 (a) Write balanced chemical equilibrium equations (with physical states) for acid dissociation of acetic acid and base hydrolysis of acetate lon. (b) Write K, and K, equilibrium constant expressions for the above reactions. (c) Use your expressions from part b to show that KK - 1.0...
Weak Acid-Strong Base Titration Date Nanse PRE-LAB OUESTIONS 1 Calculate the molarity of a NaOH solution...
Weak Acid-Strong Base Titration Date Nanse PRE-LAB OUESTIONS 1 Calculate the molarity of a NaOH solution that was used to titrate 1.2 g of potassium acid phthalate if 37.50 ml of the base were reauired to get to the end point of the titration. 2 It takes 12.45 ml. of a 0.500 M NaOH solution larity of the acid to titrate 30.0 mL of acetic acid. What is the mo- 3. Using the titration curve below, calculate the K, of...
A buffer solution is able to maintain a constant pH when small amounts of acid or...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
2. Calculate the pH of the following solutions: (a) [H3O+] = 1.4 x 10-'M (b) [OH-]...
2. Calculate the pH of the following solutions: (a) [H3O+] = 1.4 x 10-'M (b) [OH-] = 3.5 x 10-2M (c) pOH = 10.5 3. What is the pH of a 0.10 M solution of HCIO4? (A strong acid) 4. Write the dissociation reaction and the corresponding K, expression for the following acids in water. (a) H3PO4 (b) C&H OH 5. Write the reaction and corresponding Ko expression for each of the following bases in water. (a) NH3 (b) PO4...
Critical Skills 9 Acid-Base Equilibria) Due: 6 pm Monday March 30 upload to Gradescope Class time: 9:30 11:00 2:00 (from back of page) 1. Consider the conjugate acid-base pair NHA and NH, a. Write the acid dissociation (ionization) reaction for NHA" in water. Hint: NH."(aq) + HOME? Label each conjugate acid-base pair. b. Write the expression for equilibrium constant for this reaction ( ?) c. Write the base dissociation (Ionization) reaction for NH, in water. Hint: Nyaq) + HOS Label...
Determine the volume you would need of each solution (acid/base and conjugate) to make a buffer with a specific pH. Please only use the acids, bases and salts from the table on page 87 in the lab manual. See below for assigned values, each person will be calculating volumes needed for an acidic buffer and a basic buffer. Chart from page 87 List 0.10 M CH,NH, 9.75 the 0.10 M NHỰC H. " List E 0.10 M HCOOH K -...
CHE 172 Acid-Base Equilibrium Worksheet 1. Identify the conjugate pairs in the following reaction: HC2H302(aq) + H2O + H20*24) + CH3O2 (aq) 2. Based on the Kb of the following weak bases, which is the strongest base? C6H5NH2 HONH2 H2NNH2 C2H5NH2 Kb = 4.3x10-10 Ko = 1.1x10-8 Kb = 1.3x106 Kb = 6.4x104 Which has the strongest conjugate acid? 3. Calculate the pH of the following solutions: a. 0.25M HBO b. 0.25M Ba(OH)2 C. 0.25M HCN (K. = 5.00x10-10) d....
Analytical
i. As the ionic strength, μ +0, activity coefficient, γ activity - The pH of a 3.22 x 102 M solution of Sr(OH)2 is ii. The activity coefficient of Fe3t at μ = 0.075 (aFe"-o9 nm) is Write the ACCURATE expressions for the equilibrium constants, K, for the reaction below in terms of activity coefficients and concentrations. v. CaF2(s) + 2 H2O() Ca2"(aq) + 2 HF (aq) + 2 OH (aq) v. Which of the following is the strangest...
1. Identify the Brönsted acid and base in the following reaction, and identify the conjugate base and acid formed. HSO3-(aq) + CH3NH3(aq) ------ H2SO3(aq) + CH3NH2(aq) 2. Write the formulae for the conjugate acids of: 1. a) C2042: the oxalate ion. 2.b) C6H5NH2, aniline. 3.c)NH2OH, hydroxylamine. (Use above question as a guide for where to put the H.) 3. Calculate the molarity of OH' in solutions with the following concentrations of H30*: a) 0.020 mol LP b) 1.0 x 10-5...
When dealing with buffer systems, we often use the acid reaction to determine the equilibrium and set up the ICE table. The most common experimental method used to study acid-base systems is titration, which studies the stoichiometric addition of the acid to a base solution or the base to an acid solution to determine the value of K, or K, The value of the pK, or pK, is essential to the understanding of the buffer system, where pK, = -log...
Problem Set 14 CHEM 1252 November 4, 2019 Textbook Reading Assignment: 15.1-4 Additional Practice Problems: 15.11-15,17,19,21,24,28-31,35,37,41,43,45,47 1. Acetic acid (HCO,H) has k, = 1.8 x 10- and acetate (HCO3") has ke -5.6 x 10-10 (a) Write balanced chemical equilibrium equations (with physical states) for acid dissociation of acetic acid and base hydrolysis of acetate lon. (b) Write K, and K, equilibrium constant expressions for the above reactions. (c) Use your expressions from part b to show that KK - 1.0...
Weak Acid-Strong Base Titration Date Nanse PRE-LAB OUESTIONS 1 Calculate the molarity of a NaOH solution that was used to titrate 1.2 g of potassium acid phthalate if 37.50 ml of the base were reauired to get to the end point of the titration. 2 It takes 12.45 ml. of a 0.500 M NaOH solution larity of the acid to titrate 30.0 mL of acetic acid. What is the mo- 3. Using the titration curve below, calculate the K, of...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
2. Calculate the pH of the following solutions: (a) [H3O+] = 1.4 x 10-'M (b) [OH-] = 3.5 x 10-2M (c) pOH = 10.5 3. What is the pH of a 0.10 M solution of HCIO4? (A strong acid) 4. Write the dissociation reaction and the corresponding K, expression for the following acids in water. (a) H3PO4 (b) C&H OH 5. Write the reaction and corresponding Ko expression for each of the following bases in water. (a) NH3 (b) PO4...
Most questions answered within 3 hours.
-
An MNE is this kind of industry when competition in one country
is essentially independent of...
asked 42 minutes ago -
. For this set of questions, determine what
proportion of a normal distribution is located betweeneach...
asked 1 hour ago -
A college student is employed as a door-to-door newspaper
salesman. Historical data suggests that the student...
asked 2 hours ago -
MATLAB HW 11 problem using Switch Case and Input commands
Write a script file that calculates...
asked 1 hour ago -
Considering gravitational time dilation, calculate the time that
passes in Earth’s surface while 1 hour passes...
asked 2 hours ago -
Minitab Problem: Take the Lake Hume June rainfall data and find
use the processes outlined in...
asked 3 hours ago -
X Company is trying to decide whether to continue using old
equipment to make Product A...
asked 3 hours ago -
IN PYTHON ONLY !! Program 2: Re-work
program #5 (WeeklyHours) from the previous assignment such that...
asked 4 hours ago -
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 5 hours ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 6 hours ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 6 hours ago -
An empty test tube weighs 15.923 grams. Then,
MgCl2•6H2O is added into the test tube. After...
asked 6 hours ago