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This is the 5th lesson for Unit 13 Acids and Bases
Table M 1:35
1) What are indicators https://drive.google.com/file/d/1Bp8TuJaj7pNyXkFa5NlGeGLkBZXSF5QA/view?usp=sharing
Prelab for NaOH Standardization lab
total alkalinity water test | phenolphthalein alkalinity | methyl orange alkalinity
by this animation we can estimate phenolphthalein alkalinity and methyl orange alkalinity in given water sample in easiest way.
Acids & Bases (1310) | Intro & Theory
Introduction to Experiment 8 in CHEM 1310, The Nature of Acids & Bases.
2 Exp: Ammonium Iron II Sulfate Standard Solution & Titration with Potassium Permanganate
This video explores mandatory experiment 4.5 A potassium manganate(VII)/ammonium iron(II) sulfate titration.
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Exp. no 3 To determine the partition coefficient of benzoic acid between benzene and water.
At the distribution equilibrium, the ratio of concentration of solute in two immiscible liquid is constant at a given temperature.
The constant is called the partition coefficient (K) or distribution coefficient of the solute between the two solvents.
How to Standardize 0.1 N Sulphuric Acid (H2SO4) Solution
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ph scale https://youtu.be/tZTgwSKqSIU
HOW TO PREPARE 1N AND 0.1 N SULPHURIC ACID https://youtu.be/0dHf4bpZKwc
Pharmaceutical packaging and labelling introduction
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AP Chemistry Titration of Tums Lab setup
Core Practical: Carrying Out a Titration GCSE Separate Chemistry 19
This video looks at how you can work out the concentration of any acid/alkali using a titration involving a known volume / concentration.
Practice Question: 08:34
Model Answer: 08:50
√ First hand investigation: Acidity and pH | Acidic Environment | Chemistry
The acidity or basicity of each substance can be determined using:
• Universal indicator paper. This type of indicator paper produces a range of colours that can be matched to a standard colour card.
• A variety of different indicators to cover the whole pH range. By testing each solution with different indicators, the pH of the solution can sometimes be determined within a narrow range.
• pH meter and pH electrode. This system uses a galvanic cell to measure electrical potential differences across the glass membrane of the pH electrode. The differences in voltage are related to pH. The pH probe and meter must first be calibrated with solutions of known pH (called buffers). This is the simplest and most accurate method.
Solutions to test
• Acidic solutions: 0.01 mot L ; vinegar; lemonade; lemonjuice; milk.
• Basic solutions: 0.01 mot L ; baking sodasolution; ammonia solution; chlorine bleach.
Results and analysis
Depending on the method used, the pH values obtained for the tested solutions should be close to the results.
Accuracy and reliability
The results obtained will vary, especially with commercial products, due to normal differences in composition of the materials selected. Reliability can be improved by ensuring the pHmeter is calibrated regularly and stored correctly.
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