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

Properties and reactions of acids and bases lab report

29/12/2020 Client: saad24vbs Deadline: 10 Days

Acid-Base Chemistry


Hands-On Labs, Inc. Version 42-0137-00-03


Lab Report Assistant


This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor.


Exercise 1: Using pH Paper and the Indicator Bromothymol Blue (BTB)


Data Table 1. Data Collected from Exercise 1.


ID Number


Chemical Name


Chemical Formula


Hypothesis: Acid or Base


pH


BTB Color


Acid or Base?


11A


Acetic acid


CH3COOH


Acid


pH 2


Yellow


Acid


11B


Nitric acid


HNO3


Acid


pH 3


Yellow


Acid


11C


Sulfuric acid


H2SO4


Acid


pH 3


Yellow


Acid


11D


Phosphoric acid


H3PO4


Acid


pH 2


Yellow


Acid


11E


Sodium acetate


CH3COONa


Base


pH 7


Blue


Base


11F


Sodium bicarbonate


NaHCO3


Acid


pH 8


Blue


Base


11G


Sodium dihydrogen phosphate


NaH2PO4


Base


pH 0


Yellow


Acid


11H


Sodium hydrogen sulfate


NaHSO4


Acid


pH 6


Yellow


Acid


12A


Sodium hydrogen sulfite


NaHSO3


Acid


pH 5


Yellow


Acid


12B


Limewater


Ca(OH)2


Base


pH 9


Blue


Base


12C


Sodium phosphate


Na3PO4


Base


pH 13


Blue


Base


12D


Sodium hydrogen phosphate


Na2HPO4


Base


pH 7


Blue


Base


12E


Ammonium hydroxide


NH4OH


Base


pH 8


Blue


Base


12F


Hydrochloric acid


HCl


Acid


pH 2


Yellow


Acid


12G


Sodium carbonate


Na2CO3


Base


pH 10


Blue


Base


12H


Sodium hydroxide


NaOH


Base


pH 12


Blue


Base


Questions


A. When you created hypotheses to guess whether each chemical was an acid or base, what specifically did you look for in the chemical formulas?


I looked for OH- or H+ in the formula and if it was an H+ than the chemical is most likely acidic and OH- would be basic.


B. What is the value of using pH paper as an indicator?


You could find if it were a weak or strong acid or base by looking at the pH paper. With the pH paper, you would be able to determine the substances pH value number and not just if it’s acidic or basic.


C. What is the value of using BTB as an indicator? When might BTB be a better choice than pH paper?


To figure out the pH value we must add the BTB, green means it's natural, blue is base, and yellow is acidic. It’s useful to do this whenever you want to know if any chemical is acidic or basic.


D. Write the chemical equation of mixing nitric acid (HNO3) with water.


HNO3 (aq)+ H2O(aq) <—>H3O++NO3-


E. Write the chemical equation of mixing ammonia (NH3) with water.


NH3(aq) H2O —>NH4+(aq)+ OH-(aq)


F. What are the conjugate acids and conjugate bases of questions D and E?


The conjugate bases of D and E are NO3-and OH


Exercise 2: Acid-Base Reactions


Data Table 2. Acid-Base Reactions.


Row


1


2


3


4


5


6


A HCl


pH:


11


pH:


10


pH:


10


pH: 9


# drops NaOH:


5


B CH3COOH


pH:


0


pH:


9


pH:


0


pH: 12


# drops NaOH:


6


C C,H2SO4


pH:


6


pH:


9


pH:


11


pH:


14


pH:


13


pH: 12


# drops NaOH:


9


D H3PO4


pH:


2


pH:


5


pH:


6


pH:


6


pH:


12


pH: 7


# drops NaOH:


12


Questions


A. Visually analyze the wells in the plate. What information can be gleaned from each well based on the color of the BTB indicator after each reaction has occurred? How do you know if neutralization has occurred? Cite examples from the well plate reactions to support your answer.


Neutralization has happened when the resulting solution's pH will be less than 7. While looking at the reaction in the wells, you could see the BTB reacting with the chemical the color change can indicate the Neutralization has happed. But I think the most effective way was to use the pH test strip to determine the pH level to see if Neutralization has happed.


B. What factors determine if neutralization occurs during an acid-base reaction?


A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.


C. Is the pH at the equivalence point always equal to 7? Explain your answer based on your experimental observations. Include a discussion of equivalence point pH values for strong versus weak acids.


There is no motivation behind why the pH ought to be seven at the equivalence point except if the acid being titrated is a strong acid, and the base from the Burette is a solid base. On the off chance that you are titration a frail acid with a solid base, the items will be a weak base and an exceptionally weak acid. So, pH will be >7.


D. In all the chemical reaction performed in Exercise 2, neutralization occurs when the pH is neutral (7) or basic (>7). Did any of the reaction not result in a color change of the BTB indicator from yellow (acid) to blue (base)? Explain why neutralization may not have occurred in one or more reactions.


I feel that some the chemicals that were neutralized combined well with the BTB resulting in their chemical reaction to be neutral as it is neither acidic nor alkaline and some did not blend because it may have been a weak acid it does not dissociate fully when it is dissolved.


Exercise 3: Testing the pH of Household Products


Data Table 3. Household Acids and Bases.


Household substance


Prediction:


(Acid, Base, or Neutral)


pH Value


Conclusion:


(Acid, Base, or Neutral)


Coffee w/Cream


Acid


pH 7


Neutral


Soda (Coke)


Acid


pH 3


Acid


Bleach


Base


pH 10


Base


Lysol


Acid


pH 7


Neutral


Isopropyl


Acid


pH 5


Acid


Questions


A. What properties did you use to determine whether the substances you tested were acid or base?


What I used were the pH strips to help me conclude whether the chemical/product I tested was acid or base.


B. Did any of your findings surprise you? Why or why not?


I was surprised by the coffee since the result came out to be neutral. I have always been told that it was acidic due to what it does to your teeth in long-term. But after thinking about it since there was cream in the coffee, it may have canceled the acidity in the coffee that would have made it an acid. Another one that I was surprised with was the Lysol since it is a cleaner, I thought it would be acidic to be able to clean thoroughly and remove all the grams.


My Findings


After working on this lab, I learned that not all things that you have been told might be correct for instance when I did the test on the coffee with cream it did not come out to be acidic. After thinking about it, I came up with a hypothesis that I wanted to test to see if I was correct and to my findings, I was right. So, I knew that the coffee I tested was not acidic with the cream. I took it upon myself to test another coffee without the cream, and the result was that black coffee is more acidic, I used a pH strip to check the coffee, and the result was a pH leave of 5 making it acidic. In conclusion, if you would like a coffee with less acidity add some cream to cancel it out.



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:

Helping Hand
University Coursework Help
Top Essay Tutor
Homework Guru
Essay & Assignment Help
Assignment Hut
Writer Writer Name Offer Chat
Helping Hand

ONLINE

Helping Hand

I am an Academic writer with 10 years of experience. As an Academic writer, my aim is to generate unique content without Plagiarism as per the client’s requirements.

$75 Chat With Writer
University Coursework Help

ONLINE

University Coursework Help

Hi dear, I am ready to do your homework in a reasonable price.

$77 Chat With Writer
Top Essay Tutor

ONLINE

Top Essay Tutor

I have more than 12 years of experience in managing online classes, exams, and quizzes on different websites like; Connect, McGraw-Hill, and Blackboard. I always provide a guarantee to my clients for their grades.

$80 Chat With Writer
Homework Guru

ONLINE

Homework Guru

Hi dear, I am ready to do your homework in a reasonable price and in a timely manner.

$77 Chat With Writer
Essay & Assignment Help

ONLINE

Essay & Assignment Help

I have a Master’s degree and experience of more than 5 years in this industry, I have worked on several similar projects of Research writing, Academic writing & Business writing and can deliver A+ quality writing even to Short Deadlines. I have successfully completed more than 2100+ projects on different websites for respective clients. I can generally write 10-15 pages daily. I am interested to hear more about the project and about the subject matter of the writing. I will deliver Premium quality work without Plagiarism at less price and time. Get quality work by awarding this project to me, I look forward to getting started for you as soon as possible. Thanks!

$70 Chat With Writer
Assignment Hut

ONLINE

Assignment Hut

Hello, Hello there, Just read the description and are pretty interested in your project, let us take this project from you and we assure to provide you with 100% unique content. I will share samples of our work once we’ll initiate the chat. Looking forward to being considered.

$70 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

Battleship c++ - Ethical teachings of beatitudes - Puberty blues 1981 characters - Avril lavigne somebody else lyrics - NURSING: EVIDENCED-BASED PRACTICE PROJECT - APA paper, minimum of 2 pages - Ethical issues surrounding corporate governance from a global position - It is common to progressively elaborate the network diagram - Arguments for cell phones in school - Experiment 1 heart valves and pumps - Evans technology has the following capital structure - Discussion question finance wk 1 - Howard university hospital security breach - Https www google com search q sex offender registry - Centripetal force and uniform circular motion lab report - Kerry brandis physiology viva - The comforts of home flannery o connor sparknotes - How to install ankascrew - North or south who killed reconstruction answers - 95 confidence interval z score - 2365 level 3 assignments answers - Two crickets chirpy and milada - What approaches could have yielded additional valuable information - Milson palmerston north postcode - Butler systems case study - Oral Communication Homework - 44 andalusian retreat brigadoon - A voyage to the country of the houyhnhnms pdf - How to calculate mr - Nrma stolen car claim - Power circuit theory uts - Viewpoint os map symbol - The last dance 10th edition free pdf - Rogue waves tend to occur - Disss 222 - Master mason penal sign - Sir charles gairdner hospital radiology - John jay final exam schedule - Discussion - Abacus owner builder online - MG375 Unit 2 Assignment - Topic 6 insolation and the seasons answers - The statement system.out.printf("%10s", 123456) outputs ________. (note: * represents a space) - Certificate iv in property services operations qld - Barberry inc manufactures a product called fruta - Malware Responses - Cinquain poem how to write - What are the 3 prophecies in macbeth act 4 - Kin 173 msu pontifex website - Intentional Torts - Who invented freeze drying - Federico mahora perfume list - Qualified thrift lender test - Staffing metric - How information technology impacts family eldercare and parenting issues - Iec 61000 3 13 - Module Six Critical Thinking Exercise - Free radical substitution questions - Derivative of e y - What determines reliability and creditability for good presentations - Insulation resistance test nz - Business plan template hubspot - John callahan black mass - Twin oaks health center has a bond issue outstanding - Actron air conditioner control panel - NR103 Transition to the Nursing Profession 3-Minute Reflection (2-3 Paragraphs) - P2 29a accounting - Which consumer market segments best match with benihana - 40a sellick drive croydon - Group therapy - Is li2so4 soluble in water - Thank you for your interest in working with us - English studies hsc syllabus - Baekjul black belt academy - Week 14 - White Collar Crime - The cost object of the plantwide overhead rate method is - Jk rowling harvard speech rhetorical analysis - Essay - Activity - Characteristics of mother munchausen by proxy cases - Cathodic protection design calculation - Carl rogers 6 conditions - Insufficient logging and monitoring insufficient logging and monitoring - Matlab - Mechanical universe youtube - Is vinegar a pure substance or mixture - Ethical principles in nursing essay - What was jack lalanne's dog's name - How do you calculate the case mix index - Jones electrical distribution case pdf - Classification Exercise - Chick fil a strategic plan - Research proposal on serial killers - Safer Opioid Use Scenario and research article review due 9/22/2020 - Whatever major loser get the picture duh - Dog tattoo lookup canada - A lane search or partitioning the area into lanes - O bid me leap - Basic solution linear programming examples