Our Services

Get 15% Discount on your First Order

CHEM 146 Lab 6 Worksheet v1.3 | 1 Lab 6 Worksheet GRADE ____ /25 p

February 27, 2024

CHEM 146
Lab 6 Worksheet v1.3 |
1

Lab 6 Worksheet

GRADE ____ /25 p

Your name:

Your section:

Note:
great care must be exercised in accurately reading VNaOH, that is, the volume must be interpolated (estimated between the scale “tick marks”) to within 0.1 mL. Small errors in interpolating the volume can significantly impact the resulting pKa determination and molar mass calculations.

An unknown weak acid (
Weak Acid #1) is titrated with standardized NaOH (
0.5002 M NaOH) and gives the following weak acid titration (pH vs. VNaOH) and First Derivative (
d(pH)/d(VNaOH) vs.
VNaOH) curves:

First Derivative ()

1. From the curves,
what is the
VNaOH
(volume of titrant base)
at the endpoint for
Weak Acid #1?

2. For
Weak Acid #1,
what is the pKa?

3. For
Weak Acid #1,
what is the pH at the endpoint?

4. Assuming the mass of the weak acid used in the titration was 0.211 g,
what is the molar mass (
MHA) of Weak Acid #1
? Show all work. Clearly state all equations (symbolic mathematical expressions) used.

A

different
unknown weak acid (
Weak Acid #2) is titrated with standardized NaOH (
0.4477 M NaOH) and gives the following weak acid titration (pH vs. VNaOH) and First Derivative (
d(pH)/d(VNaOH) vs.
VNaOH) curves:

First Derivative ()

5. From the curves,
what is the
VNaOH
(volume of titrant base)
at the endpoint for
Weak Acid #2?

6. For
Weak Acid #2,
what is the pKa?

7. For
Weak Acid #2,
what is the Ka? Show all work.

8. Assuming the mass of the weak acid used in the titration was 0.117 g,
what is the molar mass (
MHA) of Weak Acid #2
? Show all work. Clearly state all equations (symbolic mathematical expressions) used.

image4.png

image1.png

image2.png

image3.png

>Chemistry homework help

Share This Post

Order a Similar Paper and get 15% Discount on your First Order

Related Questions

Please view the following brief video for tips on writing an introductory paragraph for your research paper essay: Link (Links to an external site.) If

Please view the following brief video for tips on writing an introductory paragraph for your research paper essay: Link (Links to an external site.) If this video gave you some tips to begin writing your introductory paragraph, please do so now. Your paragraph should begin with a “hook” – something to

As eLearning continues to grow, it becomes increasingly important to determine whether classes or training are effective. How can we determine if

As eLearning continues to grow, it becomes increasingly important to determine whether classes or training are effective. How can we determine if eLearning classes are meeting their goals and have a positive return on investment (ROI)? Describe how you would develop an analytical approach to assess the class you are

plan is based on research and organizational goals. Refer to the Balanced Scorecard you created in Week 3.

Column 1: Identify whether the statement is mentalistic or behavioristic for each scenario. Column 2: Explain the reasoning behind your choices. Some of

Column 1: Identify whether the statement is mentalistic or behavioristic for each scenario. Column 2: Explain the reasoning behind your choices. Some of the scenarios are similar and you may reuse your justification in multiple scenarios—but you must restate the explanation for each scenario. Column 3: Provide a behavioristic explanation

Only a few 5-6 sentences needed for discussion reply to megan with 2 sentences

WRK100 – PREPARING FOR THE FUTURE OF WORK Name: Professor Name:

WRK100 – PREPARING FOR THE FUTURE OF WORK Name: Professor Name: Date: Week 6 Assignment – Employability Skills and the Future of Work For this assignment, you will be writing about the value and impact of two of the 10 Skills: Self and Social Awareness and Communication. Before you complete

Select 1 well-known business you would like to research and use as the basis for developing a marketing campaign. Refer to the

Select 1 well-known business you would like to research and use as the basis for developing a marketing campaign. Refer to the following resources, as needed, for assistance selecting a business and locating information about it: · Marketing professional organizations, such as 4 A’s website or American Marketing Association website

what are the best ways to create a leadership development plan

EVALUATION REPORT — ATTEMPT 1 — REVISION NEEDED Overall Evaluator Comments EVALUATOR

EVALUATION REPORT — ATTEMPT 1 — REVISION NEEDED Overall Evaluator Comments EVALUATOR COMMENTS Your work here identifies a business question for the scenario and understands why the decision tree is a good path forward. Your analysis shows your understanding of possible limitations for the data element and the decision tree.

Cabinet renovation \2.1 As you develop your project schedule and budget it is not unusual for something that you have never considered to impact your

Cabinet renovation \2.1 As you develop your project schedule and budget it is not unusual for something that you have never considered to impact your schedule and budget. How would handle such unplanned event(s) that could impact your schedule and budget. What is the critical path and as a project

2.1 Compare and contrast 2 tools/ techniques of the control quality process. 2.2 What are the challenges

2.1 Compare and contrast 2 tools/ techniques of the control quality process. 2.2 What are the challenges of incorporating quality management practices into a project team? 1. Quality Management and the Project Team What are the challenges of incorporating quality management practices into a project team? · . Why is

article review Read the attached article, “Adlerian-based responses for the mental health counselor to the challenging behaviors of teens,” and

article review Read the attached article, “Adlerian-based responses for the mental health counselor to the challenging behaviors of teens,” and address the following in a short essay (approximately 500 words): · Write a summary of the article, making sure that you use your own words · Explain why you need

CRJ180: Juvenile Delinquency and Justice Week 6 Assignment Combating Juvenile Delinquency Please answer the

CRJ180: Juvenile Delinquency and Justice Week 6 Assignment Combating Juvenile Delinquency Please answer the following questions using well-developed sentences or short paragraphs, using your own words. This worksheet requires at least 3 credible sources cited in Strayer Writing Standards (SWS) format. 1. Examine two local programs that address juvenile delinquency

Article Review Read the attached article, “Adlerian-based responses for the mental health counselor to the challenging behaviors of teens,” and

Article Review Read the attached article, “Adlerian-based responses for the mental health counselor to the challenging behaviors of teens,” and address the following in a short essay (approximately 500 words): · Write a summary of the article, making sure that you use your own words · Explain why you need

What are the main hypotheses? What is/are independent variable(s)? What is/are dependent variable(s)? How did researchers recruit their participants?

What are the main hypotheses? What is/are independent variable(s)? What is/are dependent variable(s)? How did researchers recruit their participants? Identify participants’ demographic information and data collection procedure. What materials did researchers utilize to measure the hypotheses? Identify the apparatus and measurements. What are the key findings/results of the study?

Generative adversarial nets are mentioned in 2014 by Ian Goodfellow et al. Why is generative adversarial network a key turning point in the history

Generative adversarial nets are mentioned in 2014 by Ian Goodfellow et al. Why is generative adversarial network a key turning point in the history of generative modeling? Why is the field of image generation important?

INSTRUTIONS ATTACHED TOPIC TO DISCUSS How gps tracking units placed on cars can be obtained by law enforcement

INSTRUTIONS ATTACHED TOPIC TO DISCUSS How gps tracking units placed on cars can be obtained by law enforcement consistent with the 4th amendment and how such devices can help criminal investigations? Remember there must be critical analysis from you I the paper and not just a book report. Overview: A

pfa TASK 1: By Tuesday Evening Reflection and Discussion Forum Week 3

pfa TASK 1: By Tuesday Evening Reflection and Discussion Forum Week 3 Assigned Readings: Chapter 8. Understanding Markets and Industry Changes. Chapter 9. Market Structure and Long-Run Equilibrium. Chapter 10. Strategy: The Quest to Keep Profit from Eroding. Initial Postings: Read and reflect on the assigned readings for the week.