Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

What color is potassium chromate

19/11/2021 Client: muhammad11 Deadline: 2 Day

Debra Myers, Mulac, Schulze, Smith

Lab Group #3

04/06/2016

Le Châtlier’s Principle

Purpose/Objective:

Investigate Le Châtlier’s principle on chromate and dichromate equilibrium and also investigate the positions and reactions of the Potassium Chromate and /Potassium ferrocyanide and Iron (III) Nitrate.

Procedure:

Exercise 1: Equilibrium of Chromate and Dichromate

1.Sat my well plate on the table, then I snipped the tip off the Potassium Chromate and placed it upright position inside one of the 24 wells as a holder. 2. Placed 8 drops of Potassium Chromate inside the well in front of where I was holding my pipet. 3. Observed and recorded the color it changed to in the Data 1 slot of Exercise 1 table. 4. I added drops of hydrochloric acid into it until it changed colors and reached its equilibrium. Then I recorded the number of drops in the table. 5. Recorded the color of the dichromate in to the table. 6. Added drops of Sodium Hydroxide to the potassium chromate and watched until the equilibrium shift positions and color change. Recorded the number of drops of NaOH into the data. 7. I got my ice cold water and my hot water together. 8. Placed 8 drops of Potassium Chromate into an empty well and added 4 drops of HCL into it. 9. Used my empty pipet and drew up the contents into it and held it, so the pipet was right side up. 10. Watched the color and the equilibrium shift and recorded it into the table. 11. Placed the reaction into the cold water for 2-3 mins and after I took it out I observed the equilibrium and color. 12. Recorded the data into the table along with my explanations. 13. I placed the reaction in the Hot Water cup for 2-3 mins and after I took it out; I observed the color and determined the position shift. 14. I recorded the data into the table 2. 15. Clean my equipment and placed the caps on the bottles to use in next experiment.

Exercise 2: Equilibrium of Ferrocyanide and Ferric Ferrocyanide

1. Sat my well plate on the table, then I snipped the tip off the Potassium Ferrocyanide (wipe the scissors with a damped paper towel) and snipped the tip off the Iron (III) Nitrate and placed them upright position inside two of the 24 wells as a holder. 2. Placed 8 drops of potassium ferrocyanide into the empty well and recorded the color in the data table3. 3. Added 1 drop of Iron (III) Nitrate to the potassium ferrocyanide and recorded the color in the table. 4. I added drops of NaOH into it until it reached its equilibrium shift/color change. 5. I recorded the number of drops in the data table. 6. Observed the reaction and recorded my data into the table. 7. Cleaned all my equipment and closed the lids tightly for future use.

Exercise 1: Equilibrium of Chromate and Dichromate

Data Table 1. Chromate-Dichromate.

Color of Chromate

Number of drops of HCl to reach equilibrium

Color of Dichromate

Number of drops of NaOH to shift equilibrium position

Dark yellow

3

Orange

7

Data Table 2. Endothermic and Exothermic Equilibrium Position.

Reaction at Room Temperature

Reaction in Cold Water Bath

Reaction in Hot Water Bath

Color

Red Orange

Bright Orange

Red-Orange

Equilibrium Position

(Left or Right)

Left- towards the reactants

Right-Towards the products

Explanation of why equilibrium is shifted to the left or to the right

There were solid particles on the bottom of the pipet while the liquid maintained the majority of the pipet. So there was a solid potion and liquid potion. potion.

The solution was all liquid, so there were no solid particles. This means the reactants mixed together formed the product.

Questions

A. Use your results to determine if the forward reaction in the potassium chromate/HCl reaction endothermic or exothermic. Explain your answer, using Table 1 to help construct your thoughts.

The Reaction is Endothermic because the substance became more acidic which equals to higher heat energy.

B. Write the equation for the equilibrium constant (K) of the reaction studied in this exercise.

K=(Cr2 O7)(H20)(KCl)2 / (K2 CrO4) (HCL)2

Use the information below to answer Questions C, D, and E:

The equilibrium constant (K) of the reaction below is K = 6.0 x 10-2, with initial concentrations as follows: [H2] = 1.0 x 10-2 M, [N2] = 4.0 M, and [NH3] = 1.0 x 10-4M.

C. If the concentration of the reactant H2 was increased from 1.0 x 10-2 M to 2.5 x 10-1M, calculate the reaction quotient (Q) and determine which way the equilibrium position would shift.

Q=1.6 * 10 (-10 exponent)

D. If the concentration of the reactant H2 was decreased from 1.0 x 10-2 M to 2.7 x 10-4M, calculate the reaction quotient (Q) and determine which way the equilibrium position would shift.

Q=1.270131585632272 * 10 (2 exponent) It will shift left.

E. If the concentration of the product NH3 was decreased from 1.0 x 10-4 M to 5.6 x 10-3M, calculate the reaction quotient (Q) and determine which way the equilibrium position would shift.

Q=7.84 * 10(-4 exponent). It will shift right.

Exercise 2: Equilibrium of Ferrocyanide and Ferric Ferrocyanide

Data Table 3. Ferric Ferrocyanide.

Color of Potassium Ferrocyanide

Color of Ferric Ferrocyanide

Number of drops of NaOH to shift equilibrium position

Observations when equilibrium position is shifted

Light yellow

Dark blue/greenish

4 drops

The dark blue/greenish substance turned brown while the surrounding substance turned yellow.

Questions

A. From your observations and data collected in Data Table 3, describe the direction of the equilibrium position shift upon addition of NaOH.

The equilibrium position would shift left because the product ratio increases when NaOH is added.

24272

Chromate

Dichromate

2KCrO + 2HCl CrO + HO + 2KCl

2(g)2(g)3(g)

N + 3H 2NH

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Homework Guru
Calculation Guru
Accounting & Finance Master
Accounting & Finance Mentor
Top Grade Tutor
Fatimah Syeda
Writer Writer Name Offer Chat
Homework Guru

ONLINE

Homework Guru

I am an elite class writer with more than 6 years of experience as an academic writer. I will provide you the 100 percent original and plagiarism-free content.

$18 Chat With Writer
Calculation Guru

ONLINE

Calculation Guru

I am an experienced researcher here with master education. After reading your posting, I feel, you need an expert research writer to complete your project.Thank You

$20 Chat With Writer
Accounting & Finance Master

ONLINE

Accounting & Finance Master

I will be delighted to work on your project. As an experienced writer, I can provide you top quality, well researched, concise and error-free work within your provided deadline at very reasonable prices.

$47 Chat With Writer
Accounting & Finance Mentor

ONLINE

Accounting & Finance Mentor

I have read your project details and I can provide you QUALITY WORK within your given timeline and budget.

$32 Chat With Writer
Top Grade Tutor

ONLINE

Top Grade Tutor

I am an elite class writer with more than 6 years of experience as an academic writer. I will provide you the 100 percent original and plagiarism-free content.

$38 Chat With Writer
Fatimah Syeda

ONLINE

Fatimah Syeda

I have read your project description carefully and you will get plagiarism free writing according to your requirements. Thank You

$29 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Gish jen who's irish pdf - Wk#3 Research paper - An inspector calls historical context - Dcs sanitation - Webi reports best practices - How to cite sentinel city in apa format - Nursing Concepts of teaching & learning- Diabetes Lesson Plan - Who packed your parachute - Business plan assessment template - Flubs ice cream fairfield - Gray manufacturing is expected to pay - Honda gx25 oil type - Gerontology reflection/respond - Film study worksheet for a work of historical fiction answers - Hair salon design layout - Cybersecurity - Transpose of matrix maple - The ethics of management hosmer 7th edition pdf - Turn off multicast name resolution - Cirque du soleil case study analysis - Reynolds george w information technology for managers 2016 pdf - Economic - Kylie jenner lip kit target - How academic writing different from a letter - Https securepro prod energy siemens com securepro - First in first out perpetual inventory method - Target market for lemonade - Normative theories of ethics ppt - Anz telegraphic transfer domestic - Qut college academic calendar - Q is greater than k - Allowance method vs direct write off - Advantages and disadvantages of anova - I write 900 words Essay on “how old do you think prince hamlet should be? - Bullock and batten 4 phase model - Global health-Case study - Comptia a+ exam objectives 1001 - American english file 2 answer key pdf - Sydney water sewerage diagram - Scheie eye institute parking - Edge of a shape - Presentation on email and wifi policies - Similes in bridge to terabithia - Getting under the hood of an annual report - Project closing 5 - Context of war photographer - Martha rogers theory applied to nursing practice - Bubaran udan mas - Google Coursera Creating a Company Culture for Security - Design Document (Module 6) - Estimating population size worksheet - How to do pmt function in excel 2013 - Elements of art form - Nursing - Barmah lakes camping area - Catcher in the rye banned book - Adapting early childhood curriculum 9th edition pdf - E6 daikin fault code - Lectures on urban economics brueckner exercise solutions - Graduate Education Assistance - Four components of an information system - A transaction walkthrough involves - Amazon supply chain case study pdf - Time signature worksheet and answers - Breckinridge school of nursing earth city mo - First poem for you meaning - Rowcroft hospice furniture shop - The other wes moore discussion questions answers - Crafting and executing strategy mcgraw hill - South australia stamp duty - Please - Hennepin theater trust box office - How could worldcom scandal be prevented - Kaizen advantages and disadvantages tutor2u - Hurley silhouette 17 bilge keel - Human resource management lussier 3rd edition pdf - The boston massacre answer key - Analysis of poem mushrooms by sylvia plath - Upper right number on chemical symbol - Citizen kane breakfast montage - Managing and using information systems 6th edition pdf free download - Assignment: Legislation Comparison Grid and Testimony/Advocacy Statement 2 - Amanda - Success factors performance manager 10 - Journal Writing Assignment: Relational Stages - Sample nursing family case study - What is the maximum and minimum temperature of venus - Data concerning follick corporation's single product appear below: - Product life cycle activities - Ben & jerry's unilever acquisition - Cisco icnd1 exam topics - MA_Discussion 8 - Introduction to scanning probe microscopy - Understand how the Brain copes from adverse Childhood Experience - The biology of osmosis jones questions - Microsoft azure introduction ppt - Jack the ripper doc - In praise of folly summary sparknotes - Telephone script for research recruitment - Raf ranks and pay - Information security