Chemistry Question

By now, you have studied Chapters 13 and 14 in your textbook that describe acid-base reactions and used Labster simulation to perform and analyze data in the titration experiment. It is time to share what you have learned!

The goal of this Signature Assignment is to show that you can compute properties of solutions and analyze and interpret data. You will create a PowerPoint presentation that shows the process of going through an acid/base titration like you would if you were in a physical lab.

Points: 50

Due: Week 8, Sunday, 11:59 p.m. (Pacific Time). No late work will be accepted.

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Background Info:

Your lab assignment presentation involves putting together a PowerPoint presentation to show other students how to perform titration. In other words, your presentation can be used to show other students (next term) how they can perform a titration by following your instructions and calculations.

To do this presentation (minimum 6 slides, in PowerPoint format), we are providing you with an acid, acetic acid (HC2H3O2) and the base (NaOH), and you will use phenolphthalein as an indicator.

You will create a mock titration experiment and use given hypothetical data (volume of vinegar, Molarity of NaOH and volume of NaOH for three trials) to solve the titration calculations (consult your instructor if you need further clarification). At the end of your presentation (only PPT slides), you will calculate (1) the unknown concentration of the acetic acid (Molarity) and (2) the % mass/vol of the Vinegar solution.

Here is a video that illustrates the titration process and necessary calculations:

Here is the hypothetical experimental data that was obtained after your hypothetical titration. Use the data provided for your calculations:

Your instructor will provide data for steps 1 and 2:

Students must complete Steps 3-10 for their presentation results!

Concentration of NaOH (from the bottle): __0.350 M___

The volume of vinegar used (that you poured in the flask): __9.50 mL____

Step:		Trial 1	Trial 2	Trial 3
(1)	Initial NaOH level in buret	0.00 mL	0.00 mL	0.00 mL
(2)	Final NaOH level in buret	25.10 mL	26.10 mL	25.70 mL
(3)	Volume (mL) of NaOH used

• Your presentation must consist of more than merely a series of bullet points to earn full credit.
• Remember, you want to teach your peers how to do titration experiment and calculations. Your experiment should be reproduced with ease.
• Use the Notes section for each slide to fully explain your answers, if necessary.
• TurnItIn will be used, so paraphrase where necessary to avoid plagiarizing.
• Grading: See rubric for specific grading criteria (in My Grades). You will be graded based on the rubric; therefore, carefully read it before you start creating your assignment. Remember there are 50 points, so your work must show quality and effort.

To include in your PPT presentation:

Part 1

• Title page
• Purpose of a titration, what is titration and why do we perform a titration?
• Include your thoughts on why understanding acid/base titration is important to your future career, and how you will use this concept as you complete your degree (at least 5 sentences with examples). Note: this section should provide insightful discussion).
• Instrumentation – what are the instruments and glassware used when performing a titration.
• Chemicals and Procedures. What chemicals are needed? List and explain the procedures for this experiment.
• Observations and expectations – List the observations and write your expectations. This might include color change and when the equivalence point (endpoint) might be reached.

Part 2

• Calculations and Results. Show all your step-by-step calculations and write your results for the Molarity of the acetic and the % of the acetic acid.
• Your results must include the following step-by-step calculations:

Steps	Description of steps	Students must do
(4)	Average volume of NaOH used (mL)	Provide Calculations
(5)	Average volume of NaOH used (L)	Provide Calculations
(6)	Moles of NaOH used in titration	Provide Calculations
(7)	Moles of HC2H3O2 neutralized by NaOH	Provide Calculations
(8)	Molarity of HC2H3O2	Provide Calculations
(9)	Grams of HC2H3O2	Provide Calculations
(10)	Percent (m/v) of HC2H3O2 in vinegar	Provide Calculations

• HINT: Remember sig figs in calculations to properly express your final answers (molarity and % mass):
  • addition/subtraction -> fewest decimals
  • multiplication/division -> fewest sig figs
• Reference page (in proper APA format)

• Read chapter 13 and 14 for review solutions and acid-base reactions

This assignment should be in current APA Style with both a title slide and a reference list that includes all the sources used. At least two scholarly sources should be used (your textbook can be one of the sources). For proper referencing of your resources consult Library on Canvas, APA 7th Edition Guide.

Rubric

Week 8 Signature Assignment Rubric

Week 8 Signature Assignment Rubric

Criteria	Ratings	Pts
This criterion is linked to a Learning OutcomeCompletion of lab scenario	50 to >44.5 pts Exceeds Expectations Identifies and demonstrates a sophisticated understanding of the acid/base titration process, and how to analyze and interpret data. 44.5 to >36.0 pts Meets Expectations Identifies and demonstrates a satisfactory understanding of the acid/base titration process, and how to analyze and interpret data 36 to >29.5 pts Approaches Expectations Identifies and demonstrates some understanding of the acid/base titration process, and how to analyze and interpret data 29.5 to >0 pts Does Not Meet Expectations Does not demonstrate an acceptable understanding of the acid/base titration process, and how to analyze and interpret data	50 pts
This criterion is linked to a Learning OutcomeApplication of scenario	20 to >17.8 pts Exceeds Expectations Presents an insightful and thorough analysis on the importance of understanding how to compute properties of solutions. 17.8 to >14.4 pts Meets Expectations Presents a somewhat insightful and thorough analysis on the importance of understanding how to compute properties of solutions. 14.4 to >11.8 pts Approaches Expectations Presents a less than insightful and thorough analysis on the importance of understanding how to compute properties of solutions. 11.8 to >0 pts Does Not Meet Expectations Presents a superficial or incomplete analysis on the importance of understanding how to compute properties of solutions.	20 pts
This criterion is linked to a Learning OutcomePowerPoint Presentation Visual	20 to >17.8 pts Exceeds Expectations The PowerPoint is engaging and interesting for the audience. The PowerPoint demonstrates a sophisticated clarity, conciseness, and correctness; includes thorough details, relevant data, and information; and is extremely well organized. Slide number requirements are met. 17.8 to >14.4 pts Meets Expectations The PowerPoint is interesting, but does not fully engage the audience. The PowerPoint is accomplished in terms of clarity and conciseness and contains only a few errors; includes sufficient details, relevant data, and information; and it is well organized. Slide number requirements are met. 14.4 to >11.8 pts Approaches Expectations The PowerPoint is not very interesting or engaging. The PowerPoint lacks clarity or conciseness and contains numerous errors; provides insufficient detail, relevant data, and information; and lacks organization. Slide number requirements may not be met. 11.8 to >0 pts Does Not Meet Expectations The delivery is not interesting or engaging. The PowerPoint is unfocused, rambling, or contains serious errors; lacks detail, relevant data, and information; and is poorly organized. Slide number requirements are not met.	20 pts
This criterion is linked to a Learning OutcomeWriting Mechanics	5 to >4.45 pts Exceeds Expectations The writing demonstrates a sophisticated clarity, conciseness, and correctness; includes thorough details, relevant data, and information; and is extremely well organized. Punctuation, spelling, and capitalization are all correct. There are no errors (0 errors). 4.45 to >3.6 pts Meets Expectations The writing is accomplished in terms of clarity and conciseness and contains only a few errors; includes sufficient details, relevant data, and information; and is well organized. Punctuation, spelling, and capitalization are generally correct with few errors (1–2 errors). 3.6 to >2.95 pts Approaches Expectations The writing lacks clarity or conciseness and contains numerous errors; provides insufficient detail, relevant data, and information; and lacks organization. Errors in punctuation, spelling, and capitalization detract from the readability of the paper (3–4 errors). 2.95 to >0 pts Does Not Meet Expectations The writing is unfocused, rambling, or contains serious errors; lacks detail, relevant data, and information; and is poorly organized. There are many distracting errors in punctuation, spelling, and capitalization (>4 errors).	5 pts
This criterion is linked to a Learning OutcomeAPA Style	5 to >4.45 pts Exceeds Expectations Uses APA Style guidelines accurately and consistently to cite sources (0 errors). Sources are used and cited expertly and are peer-reviewed, relevant sources. 4.45 to >3.6 pts Meets Expectations Uses APA Style guidelines with minor violations to cite sources (1–2 errors). Sources are somewhat relevant but may be limited in scholarly nature. 3.6 to >2.95 pts Approaches Expectations Reflects incomplete knowledge of APA Style guidelines (3–4 errors). Sources are not cited or cited with many errors. Sources are not scholarly in nature. 2.95 to >0 pts Does Not Meet Expectations Does not use APA Style guidelines. No scholarly research is evident. Does not meet the required number of sources.	5 pts
Total Points: 100