KINETICS OF THE DECOLORIZATION OF CRYSTAL VIOLET BY SODIUM HYDROXIDE PRE-LABORATORY QUESTIONS The following preparatory questions...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
KINETICS OF THE DECOLORIZATION OF CRYSTAL VIOLET BY SODIUM HYDROXIDE PRE-LABORATORY QUESTIONS The following preparatory questions should be answered before coming to lab. They are intended to introduce you to several ideas that are important to aspects of the experiment. You must turn in your work to your instructor before you will be allowed to begin the experiment. 1. Complete the following table. Time (minutes) 0 3 6 9 12 Concentration of crystal violet, [R] 7.85 x 10-6 5.41 x 10-6 3.66 x 10-6 2.68 x 10-6 2.01 x 10-6 In[R*] Prepare three graphs using the attached graph paper: i) plot [R] (y-axis) versus time, ii) plot In[R] versus time, and iii) plot 1/[R] versus time. How do these three plots differ? Which is the most linear? 1/[R] 2. a. Write the equation which describes the reaction between crystal violet and hydroxide ion. b. A solution is prepared by mixing 25.0 mLs of 4.84 x 10 M crystal violet solution with 20.0 mLs of 0.10 M NaOH solution and diluted to a final volume of 100.0 mLs. Determine the limiting reagent. c. After the reaction has gone to completion, calculate the concentration of all species in the reaction. d. How does the concentration of sodium hydroxide change over the course of the reaction? e. Explain your answer in question 2d in terms of the initial concentrations of reactants. KINETICS OF THE DECOLORIZATION OF CRYSTAL VIOLET BY SODIUM HYDROXIDE PRE-LABORATORY QUESTIONS The following preparatory questions should be answered before coming to lab. They are intended to introduce you to several ideas that are important to aspects of the experiment. You must turn in your work to your instructor before you will be allowed to begin the experiment. 1. Complete the following table. Time (minutes) 0 3 6 9 12 Concentration of crystal violet, [R] 7.85 x 10-6 5.41 x 10-6 3.66 x 10-6 2.68 x 10-6 2.01 x 10-6 In[R*] Prepare three graphs using the attached graph paper: i) plot [R] (y-axis) versus time, ii) plot In[R] versus time, and iii) plot 1/[R] versus time. How do these three plots differ? Which is the most linear? 1/[R] 2. a. Write the equation which describes the reaction between crystal violet and hydroxide ion. b. A solution is prepared by mixing 25.0 mLs of 4.84 x 10 M crystal violet solution with 20.0 mLs of 0.10 M NaOH solution and diluted to a final volume of 100.0 mLs. Determine the limiting reagent. c. After the reaction has gone to completion, calculate the concentration of all species in the reaction. d. How does the concentration of sodium hydroxide change over the course of the reaction? e. Explain your answer in question 2d in terms of the initial concentrations of reactants.
Expert Answer:
Related Book For
Personal Financial Planning
ISBN: 978-1111971632
13th edition
Authors: Lawrence J. Gitman, Michael D. Joehnk, Randy Billingsley
Posted Date:
Students also viewed these chemistry questions
-
Which aspects of HRM do you feel are most important for the employee, supervisor, and HRM professional to be responsible for? Why?
-
A solution is prepared by dissolving table salt, sodium chloride, in water at room temperature. a. Assuming there is no significant change in the volume of water during the preparation of the...
-
How is sodium hydroxide prepared commercially?
-
Let a = (123) (45) = S, and b = (23) (14) = S5, then aba is equal to (13) (25) (135) (24) (15) (23) (123) (45)
-
You loaned $ 25,000 to a close friend to buy an off-road vehicle. You planned to have him sign a note receivable, with the off-road vehicle becoming collateral, or security, for the note in case your...
-
On December 1, Nadia Electronics Ltd. has three DVD players left in stock. All are identical; all are priced to sell at $150. One of the three DVD players left in stock, with serial #1012, was...
-
Defendant Monty J. Person began working for Garage Solutions, LLC, in March 2015. Three months into his employment, Person was sent by the owner of Garage Solutions, Mark Fontenot, to Rexburg, Idaho,...
-
Gordon is the only limited partner in Bushmill Ventures, a limited partnership whose general partners are Daniels and McKenna. Gordon contributed $10,000 for his limited partnership interest and...
-
Consider a 100-step binomial model where the price of a non-dividend-paying asset at time n, Sn is modelled as Sn = SoZ1 Z2... Zn where Z are i.i.d. random variables with u = 1.05 w. p. p Zi = d =...
-
< Exercise 21 Problems-Part I The following questions are based on Figures 21-10, 21-20, and 21-30, radar images of Louisiana from the Fort Polk Doppler radar site taken on October 9, 2020, at about...
-
Goods and supplies are ordered using a purchase order (PO) by the procurement manager based on standard reorder points for stock inventory items and special orders for custom ordered items. The...
-
Take notes while watching the Jean Kilbourne video, Killing Us Softly 4. The video is linked from the Unit 4 Lectures folder. Keep track of the themes Kilbourne presented, and example of programs she...
-
If a silver dollar contains 91.0% silver by mass, how many kilograms of silver can be extracted from 4.68 kg of silver dollars? Enter your answer numerically in units of kilograms.
-
First Ted Talk: Tazeen Ahmad "Emotional Intelligence" Summarize the main points How can you apply this talk to your own life...
-
5. Imagine that a car batter costs $30 to manufacture and $45 to dispose of properly, but it can be disposed of improperly at a cost of $2 and, well, it's a car battery, so it really can't be traced...
-
Presentation Outline - Instructions & Rubric make a detailed outline for your PowerPoint presentation. You may write it in point-form if you wish, but ensure that your point form notes are clear and...
-
Consider the following differential form on A = R\{0}: 13 with the associated vector field F: -y x dr x + y2 + x + y2dy. y F = (F.F,) = -Y a x + y x + y Consider the following points: a) Prove that w...
-
In the simple quantity theory of money, what will lead to an increase in aggregate demand? In monetarism, what will lead to an increase in aggregate demand?
-
A company has total assets of $2.5 million, total liabilities of $1.8 million, and $200,000 worth of 8 percent preferred stock outstanding. What is the firms total book value? What would its book...
-
1. Calculate Cheryl Sterns taxable income, being sure to consider her exemption. Assume that the standard deduction for a single taxpayer is $5,800, and that each exemption claimed is worth $3,700....
-
Why do people borrow? What are some improper uses of credit?
-
As a security analyst covering the French market, youve identified the following factors and factor sensitivities for Elf Acquitaine (Elf): Elfs functional currency is the euro. Factors and factor...
-
Using the data shown in Figure 2.11 which anatomical site of the corn on the foot was the least frequently reported patients in the corn plaster group? The least frequently reported anatomical site...
-
The regional directors of a major investment bank are discussing investment strategies for their respective countries. a. As director of North American investments, describe to your foreign...
Study smarter with the SolutionInn App