PARTICIPATIONopenstaxWhat is the [H,O*) of 0.10 M propanoic acid (CH,CH,COOH, can simplify to HPr) (K,= 1.3x10-5)?Calculate the pH of a 0.050 M solution of ethylamine (C,H;NH2, Kb= 6.4 x104).S.Pasishnyk FSW6

It's a multiple question type. Given information, (1) [Propanoic acid] = 0.10 M Ka for propanoic…

Answered: PARTICIPATION openstax What is the…

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter8: Polyfunctional Acids And Bases

Section: Chapter Questions

Problem 4P

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8-62 What is the pH of a buffer solution made by dissolving 0.10 mol of formic acid, HCOOH, and 0.10 mol of sodium formate, HCOONa, in 1 L of water?
Two students were asked to determine the Kb of an unknown base. They were given a bottle with a solution in it. The bottle was labeled aqueous solution of a monoprotic strong acid. They were also given a pH meter, a buret, and an appropriate indicator. They reported the following data: volume of acid required for neutralization = 21.0 mL pH after 7.00 mL of strong acid added = 8.95 Use the students' data to determme the Kb of the unknown base.
A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to bring the volume to 500.0 mL of solution. (a) Calculate the pH and pOH in the final solution. (b) Why would we wait for it to return to room temperature? (c) If the mass of the water used to initially dissolve the sodium hydroxide were exactly 450 g and the temperature of the water increased by 8.865 C, how much heat was given off by the dissolution of 15.0 g of solute? Assume the specific heat of the solution is 4.184 J/g. K. What is the molar heat change for the dissolution of sodium hydroxide (known as the enthalpy of solution, Hsol)?
Explain why a sample of pure water at 40 C is neutral even though [H3O+]=1.7107M . Kw is 2.91014 at 40 C.
For oxyacids, how does acid strength depend on a. the strength of the bond to the acidic hydrogen atom? b. the electronegativity of the element bonded to the oxygen atom that bears the acidic hydrogen? c. the number of oxygen atoms? How does the strength of a conjugate base depend on these factors? What type of solution forms when a nonmetal oxide dissolves in water? Give an example of such an oxide. What type of solution forms when a metal oxide dissolves in water? Give an example of such an oxide.
Given the following Ka values, which cation is the strongest acid? Base NH3 CH;NH2 C:H;N C;H10N4O; 5.3 x 10-14 NH)»CÓ 1.5 x 10-14 |1.8 x 10-5 5.6х 104 1.7x 10-9 A. NH, B. C,H,NH, C. C,H,N" D. [G,H,,N,O;]* E. [NH,NH,CO]" O AA O B.B O D.D O EE
Calculate the pH at 25 °C of a 0.75M solution of trimethylammonium chloride ((CH3), NHCI). Note that trimethylamine ((CH,),N pK, of 4.19. Nis a weak base with a Round your answer to 1 decimal place. pH = Explanation Check O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use| Privacy Acces APR W 12 MacBoo
*eL 24% Schoology 3:27 PM Tue Apr 12 < 88 Q A S22 1020 Unit 3 PS 1 - x Worksheet 15 Acid. X Worksheet 16 Wea. x Worksheet 19 Titr Planner Untitied (1) S22 1020 Unit.. 21020 Unit 1 P b. Calculate the pH of a 0.15 M pyridine solution. CSH&N(aq) CsH;NH" (aq) OH (aq) C
Wed Mar 8 ilibrium arro... Question 3 of 16 > 1 Assignment Score: tan Learning pH = AA 2.3 Assessment - G... Incorrect 31.3% achieve.macmillanlearning.com Chempendix - S... QHow to distingui... Resources Ex Give Up? J If the K₂ of a monoprotic weak acid is 5.9 x 10-6, what is the pH of a 0.21 M solution of this acid? S If the K_a of Feedback
ANALYTICAL CHEMISTRY MIDTERM ASSIGNMENT NO. 3 (BY GROUP) A. Identify the acid (acid1) on the left side and conjugate base (basel) on the right side. (a) HOCI + H,O=H,0* + OCI¯ (b) HONH, + H,0 HONH + OH (c) NH + H,0NH3 + H;O* (d) 2HCO, H,CO, + CO (e) PO + H,PO, 2HPO} B. Identify the base (base2) on the left side and conjugate acid ( acid2) on the right side. (a) HOCI + H,0=H,0* + OCI (b) HONH2 + H0 HONH + OH- (c) NH + H,0=NH, + H;O* (d) 2HCO, =H,CO, + CO (e) PO + H,PO, 2HPO} C. Calculations: 1. What is the concentration of hydronium ion in a 0.100 M solution of HCl? 2. What is the hydroxide concentration in the solution described in item 1? 3. What is the value of pH described in item 1? 4. Is the solution acidic or basic (refer to #3)? 5. Calculate the pH of water at 75 °C. Kw of water at 75 °C is 19.9 x 1014.
← < Upload Assic X 0o DESU Calcul. X https://app.101edu.co C + 40°F Sunny T Om An unknown weak acid with a concentration of 0.520 M has a pH of 5.100. What is the Ka of the weak acid? w Aktiv Chemis X Ghow to find i XUtilities-Go X (387) finding X su www.desu.ed X 75 R E HE T Q Search z|x| | VJBJN В alt Time's Up! U I M hp SDEGHI SU Delaware Sta X Log In | Fede XQ gmail-Sear: x + A G C • 1 3 G I P ctri 10 1 4 7 +/- 2 5 8 3 6 9 0 enter 7 C x 100 A 11:38 3/30/2 1
A solution is prepared at 25 °C that is initially 0.24M in dimethylamine ((CH,), NH), a weak base with K, = 5.4 x 10, and 0.48M in dimethylammonium bromide ((CH3) NH,Br). Calculate the pH of the solution. Round your answer to 2 decimal places. pH = Explanation Check O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use PrivacyI Accessibility 17 MacBook Air

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PARTICIPATION openstax What is the [H,O*) of 0.10 M propanoic acid (CH,CH,COOH, can simplify to HPr) (K, = 1.3x10-5)? Calculate the pH of a 0.050 M solution of ethylamine (C,H;NH2, Kb= 6.4 x104).