This document discusses acid-base titration and provides examples. It explains that acid-base titration is used to calculate the concentration of an acid or base of a known volume. It describes the setup and process for titrating an acid with a base, including using an indicator that changes color at the endpoint. Sample problems are worked through to calculate the concentration of an unknown acid or base by determining the moles of titrant used and applying stoichiometry to the balanced reaction.
Titration - principle, working and applicationSaloni Shroff
A brief introduction to the titration technique used to know the concentration of unknown solutions. different types, indicators used and its application in foods and nutrition is also described.
Titration - principle, working and applicationSaloni Shroff
A brief introduction to the titration technique used to know the concentration of unknown solutions. different types, indicators used and its application in foods and nutrition is also described.
Titration is the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color change.
The pptx on complexometric titrations, EDTA titration, Why EDTA is used in complexometric titration, Classification of EDTA titration, EDTA titration curve etc.
Volumetric Analysis
Types of titration
Acid- Base Theory
Reaction, End Point & Indicators
Acid- Base titration
Titration curve
Non- Aqueous Titration
Precipitation Titration
Complexometric Titration
Oxidation- Reduction Titration,
Calculation. Errors
General Informations,
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Physical Chemistry
Titration is the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color change.
The pptx on complexometric titrations, EDTA titration, Why EDTA is used in complexometric titration, Classification of EDTA titration, EDTA titration curve etc.
Volumetric Analysis
Types of titration
Acid- Base Theory
Reaction, End Point & Indicators
Acid- Base titration
Titration curve
Non- Aqueous Titration
Precipitation Titration
Complexometric Titration
Oxidation- Reduction Titration,
Calculation. Errors
General Informations,
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Physical Chemistry
Chemistry Lab Report on standardization of acid and bases. Karanvir Sidhu
I hope it might be helpful to you.
Email me on sidhu.s.karanvir@gmail.com to see more work.
Follow me at Linkedln
https://www.linkedin.com/in/karanvir-sidhu-b6995864/
This is useful to the chemical analysis persons. Tittration is one of the basic and standard method for quantitative chemical analysis. This describs the principles of titration, function of indicators, calculation of errors etc.
Solution Stoichiometry: Reacting Volumes
Solution stoichiometry involves calculation of the volume of one solution required to react with another solution.
Solution stoichiometry uses the definition molarity to determine volumes of reagents needed to perform the experiment.
A Beginner’s Guide to Programming Logic, Introductory
Chapter 3
Understanding Structure
Objectives
In this chapter, you will learn about:
- The features of unstructured spaghetti code
- The three basic structures—sequence, selection, and loop
- Using a priming input to structure a program
- The need for structure
- Recognizing structure
- Structuring and modularizing unstructured logic
COURSE TECHNOLOGY
CENGAGE Learning
A Beginner’s Guide to Programming Logic, Introductory
Chapter 2
Working with Data, Creating Modules, and Designing High-Quality Programs
Objectives
In this chapter, you will learn about:
- Declaring and using variables and constants
- Assigning values to variables
- The advantages of modularization
- Modularizing a program
- The most common configuration for mainline logic
COURSE TECHNOLOGY
CENGAGE Learning
A Beginner’s Guide to Programming Logic, Introductory
Chapter 1
An Overview of Computers and
Programming
Objectives
In this chapter, you will learn about:
- Computer systems
- Simple program logic
- The steps involved in the program development cycle
- Pseudocode statements and flowchart symbols
- Using a sentinel value to end a program
- Programming and user environments
- The evolution of programming models
COURSE TECHNOLOGY
CENGAGE Learning
An autoclave is a device used to sterilize equipment and supplies by subjecting them to high pressure saturated steam at 121 °C for around 15–20 minutes depending on the size of the load and the contents. It was invented by Charles Chamberland in 1879, although a precursor known as the steam digester was created by Denis Papin in 1679. The name comes from Greek auto-, ultimately meaning self, and Latin clavis meaning key—a self-locking device.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
5. Sample Problem
• In this sample titration, we are trying to
determine the concentration of 20.00
mL of HCl. In the titration we will be
neutralizing the HCl with 0.150 M NaOH.
6. • Step 1: The NaOH, the titrant, is placed in
the buret. The titrant is the solution of
known concentration that is added from
the buret.
7. • Step 2: The HCl is placed in the
Erlenmeyer flask along with approximately
20.00 mL of distilled water and 2-3 drops
of phenolphthalein indicator. Since the
solution in the flask is acidic,
phenolphthalein is colourless.
8. • Step 3: NaOH is added to the HCl in the
flask. When the NaOH comes in contact
with the solution in the flask, it turns pink
and then the pink colour quickly
disappears. This is because the OH- from
the NaOH interact with the
phenolphthalein to change the
phenolphthalein from colourless to pink.
9. • The solution becomes clear again as the
hydronium ions from the hydrochloric acid
neutralize the added hydroxide ions. As
more NaOH is added, it takes longer for
the pink colour to disappear.
• As it starts taking longer for the pink colour
to disappear, the sodium hydroxide is
added a drop at a time.
11. • The equivalence point of the titration is
reached when equal numbers of moles of
hydronium and hydroxide ions have been
reacted.
• When this happens in this titration, the pH
of the solution in the flask is 7.0 and the
phenolphthalein indicator is colourless.
• This would be a good time to stop,
however the indicator is still colourless, so
must keep going.
13. • Step 4: Add as little excess NaOH as
possible. We want to add a single drop of
NaOH to the colourless solution in the
flask and have the solution in the flask turn
pink and stay pink while the contents of
the flask are swirled.
• This permanent colour change in the
indicator is known as the endpoint of the
titration and the titration is over.
15. Solve the problem
• 1st write the equation for the reaction:
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
• 2nd solve for the amount of moles of the titrant used.
NaOH mol = 0.150 mol/L x 0.02567 L= 3.85 x 10-3 mol NaOH
Found in titration experiment
• 3rd using stoichiometry, solve for the
concentration of HCl , knowing it is a 1:1 mole
ratio
3.85 x 10-3 mol= 0.192 M
0.02000 L
16. SAMPLE PROBLEM 2
• In an acid-base titration, 17.45 mL of
0.180 M nitric acid, HNO3, were completely
neutralized by 14.76 mL of aluminium
hydroxide, Al(OH)3. Calculate the
concentration of the aluminium hydroxide.
17. SAMPLE ANSWER 2
•
The balanced equation for the reaction is:
3HNO3(aq) + Al(OH)3(aq) → Al(NO3)3(aq) + 3H2O(l)
•
The number of moles of nitric acid used is:
y mol = 0.180 mol/L x 0.01745 L = 3.14 x 10-3 mol HNO3
•
From the stoichiometry of the reaction, the number of moles of
aluminium hydroxide reacted is:
3.14 x 10-3 mol HNO3 x 1 mol Al(OH)3 = 1.05 x 10-3 mol
3 mol HNO3
•
Therefore, the concentration of the aluminium hydroxide is:
1.05 x 10-3 mol Al(OH)3 = 0.0711 M
0.01476 L