Homework Answers
Part a
For aspirin
pH = 3
we know that
pH = - log [H+]
[H+] = 10^-pH = 10^-3 M
We know that
[H+] [OH-] = 10^-14
[10^-3] [OH-] = 10^-14
[OH-] = 10^-11 M
pOH = - log [OH-]
= - log (10^-11)
= 11
Part b
pH = 8
we know that
pH = - log [H+]
[H+] = 10^-pH = 10^-8 M
We know that
[H+] [OH-] = 10^-14
[10^-8] [OH-] = 10^-14
[OH-] = 10^-6 M
pOH = - log [OH-]
= - log (10^-6)
= 6
Part c
Add Answer to:
Acids & Base Worksheet 14a (Intro) Part 3: Calculations Copy the product name and pH from...
Acids & Base Worksheet 14a (Intro) EXERCISES 1. Label each of the following as Arrhenius acid....
Acids & Base Worksheet 14a (Intro) EXERCISES 1. Label each of the following as Arrhenius acid. Arrhenius base, salt, or molecular compound. a. HCI c. H2O b. NaOH f. CCM c. HC2H302 g. Mg(OH)2 d. MgCl2 2. Which of the following could be considered Bransted bases. a. NH3 d. CH-CH:COOH b. NaOH e. CH c. CH4 f. CH3NH2 3. The hydrogen ion, H, is often referred to as a proton. Why is this?
Acids & Bases Worksheet 14a (Intro) 4. Identify the sets of acid-base conjugate pairs a. HNO2,...
Acids & Bases Worksheet 14a (Intro) 4. Identify the sets of acid-base conjugate pairs a. HNO2, NO2 d. HS, H2S b. H2CO), CO e. NHs, NH4 c. HCL, CIO 3. Determine the conjugate acid-base pairs in the following equations HBr(aq) + H20)H3O (aq) + Br (ag) a. b. CHaNH2(aq) + H2O(l)-CHaNH3 (aq) +OH (aq) 6. Write the conjugate base of the following: с. НСО а. НЕr d. HCIO b. Н.СО, 7. Write the conjugate acid of the following c. PO...
Exp 11b (Intro) Name: DATA AND REPORT - DUE_!_! SECTION * Show your work and keep...
Exp 11b (Intro) Name: DATA AND REPORT - DUE_!_! SECTION * Show your work and keep track of significant figures. DATE PARTNER Mass of the magnesium ribbon 0.02599 * Record a citation for where you found the vapor pressure of water in the space below. Temperature of water 19.9°C of mercury Pressure in the room 30.00 in Vapor pressure of water at your temperature 17.319 mm Hg Volume of gas in collection tube 21.58mL Calculations 1. Theoretical yield (in grams)...
plz help on this ... KHW27 Tro 14.9-14.10 (90 min) Exercise 14.108 Term 2: Significant Figures...
plz help on this ...
KHW27 Tro 14.9-14.10 (90 min) Exercise 14.108 Term 2: Significant Figures Feedback: Your answer 3.IU2 was either rounded differentiy number of significant figures than required for this part. Constants Perniodic Table For each strong base solution, determine OH HO] pH, and pOH PartG 3.5x10-4 M Ca(OH), determine [OH l and [H30] Express your answers using two significant figures. Enter your answers numerically separat [OH ] [H307 = 13.5 . I 0 4,2.9. 10-11 Submit Previous...
< Homework 42 Weak Acid / Weak Base Equilibrium + Percent Ionization 2 of 8 Constants...
< Homework 42 Weak Acid / Weak Base Equilibrium + Percent Ionization 2 of 8 Constants Periodic Table Percent ionization can be used to quantify the extent of ionization of an acid in solution and is defined by the following formula for the acid HA: A certain weak acid, HA, has a Ka value of 4.7x10-7 Percent ionization=1 _HA ionized HA initial x 100% Part A Percent ionization increases with increasing K. Strong acids, for which K, is very large,...
Buffers help I only need help with part 2, however some information in part one might...
Buffers help
I only need help with part 2, however some information in part
one might help! My unique pH is 2.00, [HA]=0.19M, [A-]=0.01M,
[H3O+]=0.01M, and my ka is 5.263x10^-4 (at least I think this is
right). Thanks!!
Peer-Assisted Reflection (PAR) Exercise Part 1 1. First, let's look at the properties of a solution of just a weak acid in water Must be completed (as a draft) before tutorial Scenario: You prepare a 0.200 M solution of an unknown weak...
Need help with 3 and 4 on calculations. some info is on top of the page...
Need help with 3 and 4 on calculations. some info is on top of
the page
Data Sheet for Lab #10 Name: Partner: Data/Observations: Volume of (NH), SO, used: Suomi initial pH of (NH4)2SO4 6.79 Equivalence vol. of NaOH: 20.00 pH at half-equivalence: 10,63 Balanced Chemical Equation: 1. Write the balanced equation for the reaction of ammonium sulfate and sodium hydroxide. (NH4)2SO4(s)? 2 N.0H(1) Nasa, () + 2NH3(-) + 2H2O 2. Write the balanced equation showing the ammonium ion acting...
This is from a Study of Buffer Solutions and pH of Salt Solutions Lab. I calculated...
This is from a Study of Buffer Solutions and pH of Salt
Solutions Lab. I calculated Ka to be 3.2*10^-5. Why is my value
larger than the standard value?
Procedure:
10. How does your calculated value of Ka compare with the standard value of Ka for acetic acid? Discuss why your value may be larger or smaller than the standard value. Caleutats Ka 3.2x 10-5) Cyato-s Learning Objectives: 1. To test the acidic and basic properties of ionic compounds 2....
CHM130LL Lab 12 - Exploring Indicators Name: MEID Complete the following items by typing into the...
CHM130LL Lab 12 - Exploring Indicators Name: MEID Complete the following items by typing into the text box provided. The boxes will increase in size if additional space is necessary. Please be sure to save all your work as an MS Word document to submit properly. Part I - Calibration of Red Cabbage Juice Indicator A. Data Table 1: Calibration of Red Cabbage Juice Indicator with a Base Fill in the data table. Since your goal is to add sufficient...
I don't understand what calculations I would have made to create the buffer solution from Part...
I don't understand what calculations I would have made to create
the buffer solution from Part D of the lab. I understood the
procedures I took to create the solution but when the report asks
to show the calculations used to prepare the buffer solution I am
not sure other than mixing the volumes indicated in the procedures
section.
Thank you
pH of Butter Assigned by Instructor 5.12. Measured pH of Assigned B r .9 (Read the procedural Show the...
Acids & Base Worksheet 14a (Intro) EXERCISES 1. Label each of the following as Arrhenius acid. Arrhenius base, salt, or molecular compound. a. HCI c. H2O b. NaOH f. CCM c. HC2H302 g. Mg(OH)2 d. MgCl2 2. Which of the following could be considered Bransted bases. a. NH3 d. CH-CH:COOH b. NaOH e. CH c. CH4 f. CH3NH2 3. The hydrogen ion, H, is often referred to as a proton. Why is this?
Acids & Bases Worksheet 14a (Intro) 4. Identify the sets of acid-base conjugate pairs a. HNO2, NO2 d. HS, H2S b. H2CO), CO e. NHs, NH4 c. HCL, CIO 3. Determine the conjugate acid-base pairs in the following equations HBr(aq) + H20)H3O (aq) + Br (ag) a. b. CHaNH2(aq) + H2O(l)-CHaNH3 (aq) +OH (aq) 6. Write the conjugate base of the following: с. НСО а. НЕr d. HCIO b. Н.СО, 7. Write the conjugate acid of the following c. PO...
Exp 11b (Intro) Name: DATA AND REPORT - DUE_!_! SECTION * Show your work and keep track of significant figures. DATE PARTNER Mass of the magnesium ribbon 0.02599 * Record a citation for where you found the vapor pressure of water in the space below. Temperature of water 19.9°C of mercury Pressure in the room 30.00 in Vapor pressure of water at your temperature 17.319 mm Hg Volume of gas in collection tube 21.58mL Calculations 1. Theoretical yield (in grams)...
plz help on this ...
KHW27 Tro 14.9-14.10 (90 min) Exercise 14.108 Term 2: Significant Figures Feedback: Your answer 3.IU2 was either rounded differentiy number of significant figures than required for this part. Constants Perniodic Table For each strong base solution, determine OH HO] pH, and pOH PartG 3.5x10-4 M Ca(OH), determine [OH l and [H30] Express your answers using two significant figures. Enter your answers numerically separat [OH ] [H307 = 13.5 . I 0 4,2.9. 10-11 Submit Previous...
< Homework 42 Weak Acid / Weak Base Equilibrium + Percent Ionization 2 of 8 Constants Periodic Table Percent ionization can be used to quantify the extent of ionization of an acid in solution and is defined by the following formula for the acid HA: A certain weak acid, HA, has a Ka value of 4.7x10-7 Percent ionization=1 _HA ionized HA initial x 100% Part A Percent ionization increases with increasing K. Strong acids, for which K, is very large,...
Buffers help
I only need help with part 2, however some information in part
one might help! My unique pH is 2.00, [HA]=0.19M, [A-]=0.01M,
[H3O+]=0.01M, and my ka is 5.263x10^-4 (at least I think this is
right). Thanks!!
Peer-Assisted Reflection (PAR) Exercise Part 1 1. First, let's look at the properties of a solution of just a weak acid in water Must be completed (as a draft) before tutorial Scenario: You prepare a 0.200 M solution of an unknown weak...
Need help with 3 and 4 on calculations. some info is on top of
the page
Data Sheet for Lab #10 Name: Partner: Data/Observations: Volume of (NH), SO, used: Suomi initial pH of (NH4)2SO4 6.79 Equivalence vol. of NaOH: 20.00 pH at half-equivalence: 10,63 Balanced Chemical Equation: 1. Write the balanced equation for the reaction of ammonium sulfate and sodium hydroxide. (NH4)2SO4(s)? 2 N.0H(1) Nasa, () + 2NH3(-) + 2H2O 2. Write the balanced equation showing the ammonium ion acting...
This is from a Study of Buffer Solutions and pH of Salt
Solutions Lab. I calculated Ka to be 3.2*10^-5. Why is my value
larger than the standard value?
Procedure:
10. How does your calculated value of Ka compare with the standard value of Ka for acetic acid? Discuss why your value may be larger or smaller than the standard value. Caleutats Ka 3.2x 10-5) Cyato-s Learning Objectives: 1. To test the acidic and basic properties of ionic compounds 2....
CHM130LL Lab 12 - Exploring Indicators Name: MEID Complete the following items by typing into the text box provided. The boxes will increase in size if additional space is necessary. Please be sure to save all your work as an MS Word document to submit properly. Part I - Calibration of Red Cabbage Juice Indicator A. Data Table 1: Calibration of Red Cabbage Juice Indicator with a Base Fill in the data table. Since your goal is to add sufficient...
I don't understand what calculations I would have made to create
the buffer solution from Part D of the lab. I understood the
procedures I took to create the solution but when the report asks
to show the calculations used to prepare the buffer solution I am
not sure other than mixing the volumes indicated in the procedures
section.
Thank you
pH of Butter Assigned by Instructor 5.12. Measured pH of Assigned B r .9 (Read the procedural Show the...
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