This document describes a laboratory experiment to measure the amount of antacid needed to neutralize hydrochloric acid. Students will add increasing amounts of antacid powder to 50mL of dilute hydrochloric acid while monitoring the color change of an indicator from red to orange, which indicates neutralization. They will record the mass of antacid used and compare results with other groups. Questions address calculating the amount of antacid needed for larger volumes of acid. The aim is to observe the neutralization reaction between an acid and base.
19.1 acids, base and salts By Hamdy KarimHamdy Karim
Students will be able to compare between Arrhenius, Bronsted-Lowry, and Lewis theories to identify the acids and bases concept. They also will study the conjugated acids and bases in addition to the Amphoteric Substances as well!
In chemistry, acids and bases have been defined differently by three sets of theories. One is the Arrhenius definition, which revolves around the idea that acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (H+) ions while bases produce hydroxide (OH-) ions in solution.
CHAPTER 6 : ACID, BASE AND SALT
CHEMISTRY FORM 4 KSSM
1. SALTS, CRYSTALS AND PHYSICAL PROPERTIES OF SALTS
2. PRODUCE SOLUBLE SALT THROUGH THE REACTION BETWEEN
a. ACID AND ALKALI
b. ACID AND METAL OXIDE
c. ACID AND REACTIVE METAL
d. ACID AND METAL CARBONATE
3. PURIFICATION OF IMPURE SALTS THROUGH RECRYSTALLISATION METHOD
4. PRODUCE INSOLUBLE SALT THROUGH DOUBLE-DECOMPOSITION REACTION (PRECIPITATION REACTION)
19.1 acids, base and salts By Hamdy KarimHamdy Karim
Students will be able to compare between Arrhenius, Bronsted-Lowry, and Lewis theories to identify the acids and bases concept. They also will study the conjugated acids and bases in addition to the Amphoteric Substances as well!
In chemistry, acids and bases have been defined differently by three sets of theories. One is the Arrhenius definition, which revolves around the idea that acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (H+) ions while bases produce hydroxide (OH-) ions in solution.
CHAPTER 6 : ACID, BASE AND SALT
CHEMISTRY FORM 4 KSSM
1. SALTS, CRYSTALS AND PHYSICAL PROPERTIES OF SALTS
2. PRODUCE SOLUBLE SALT THROUGH THE REACTION BETWEEN
a. ACID AND ALKALI
b. ACID AND METAL OXIDE
c. ACID AND REACTIVE METAL
d. ACID AND METAL CARBONATE
3. PURIFICATION OF IMPURE SALTS THROUGH RECRYSTALLISATION METHOD
4. PRODUCE INSOLUBLE SALT THROUGH DOUBLE-DECOMPOSITION REACTION (PRECIPITATION REACTION)
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,
Describe in this slide the four theories of acid and base.1) Traditional theory 2) arrhenius theory 3) bronsted and lowry theory 4) lewis theory. also explained neutalisation reaction and amphoteric reactions.
CHEMISTRY : ACIDS,BASES AND SALTS:
1.definition and characteristics of salts,
2. preparation of salts and,
3. types of salts,
4.uses and
5.hydrolysis of salt in water
CBSE class 12th Chemistry project on antacids for cbse aissce 2017-2018Vishvjeet Yadav
Cbse class 12th investigatory project of chemistry for AISSCE board Examination
To analyse the given samples of commercial antacids by determining the amount of hydrochloric acid they can neutralize.” for class XII practical examination of the Central Board of Secondary Education in the year 2017-2018.
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,
Describe in this slide the four theories of acid and base.1) Traditional theory 2) arrhenius theory 3) bronsted and lowry theory 4) lewis theory. also explained neutalisation reaction and amphoteric reactions.
CHEMISTRY : ACIDS,BASES AND SALTS:
1.definition and characteristics of salts,
2. preparation of salts and,
3. types of salts,
4.uses and
5.hydrolysis of salt in water
CBSE class 12th Chemistry project on antacids for cbse aissce 2017-2018Vishvjeet Yadav
Cbse class 12th investigatory project of chemistry for AISSCE board Examination
To analyse the given samples of commercial antacids by determining the amount of hydrochloric acid they can neutralize.” for class XII practical examination of the Central Board of Secondary Education in the year 2017-2018.
Chemistry Investigated Project for CBSE Class 12
To get the whole "WORD" file DM me at
wadhawan.maanit@yahoo.com
Or Watsapp- 6389004709
( INCLUDING COVER PAGE, CERTIFICATE, AKNOWLEDGEMENT,INDEX, THEORY AND BIBLIOGRAPHY)
Model Attribute Check Company Auto PropertyCeline George
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Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
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2. AIM
Aim: To measure how
much antacid is needed to
neutralise some
hydrochloric acid.
3. BACKGROUND INFORMATION
• Neutralisation is a reaction
in which an acid and a base cancel
each other out to form a salt and water.
To neutralise an acid you add a base, and to neutralise a base
you add an acid.
• acid + base → salt + water
• There are many applications of neutralisation in everyday life.
For example, the odour of fish and other seafood is due to
bases called amines. Adding lemon juice or vinegar, which is
acidic, neutralises the amines, giving a more pleasant smell.
4. EQUIPMENT
1. Dil Hydrochloric acid
(0.1M)
2. Small conical flask
(250mL)
3. Measuring cylinder
(50mL)
4. Methyl orange indicator
5. Spatula
6. Antacid powder/ crushed
tablet.
7. Plastic petridish/paper
8. Electronic balance
9. White paper
5. RISK ASSESSMENT
Risk
Acids are corrosive
Injury
Burns and irritation if in
contact with skin .
Prevention
Measure dil HCl carefully.
Wear safety goggles
6. METHOD
1. Clean the petridish.
2. Measure the mass of 1spatula full (level) of powdered
antacid using an electronic balance. ( weigh a piece of small
paper or a plastic petridish / or use tare button to make the
paper weight zero, then add powdered antacid)
3. Record the weight of antacid in a result table.
4. Use a measuring cylinder to measure out 50 mL of dilute
hydrochloric acid.
5. Pour the acid into the flask.
6. Add 3 – 4 drops of methyl orange indicator to the acid.
7. METHOD
7. Place a sheet of white paper under the flask.
8. Use the spatula to add antacid bit by bit to the acid.
9. Swirl the flask gently to stir the mixture.
10. Stop adding antacid when the colour changes from red to
orange.
11. Measure the mass of the unused antacid using electronic
balance.
12. Find the mass of antacid used to neutralise 50 mL of dil HCl
by subtracting the mass of unused antacid from the original mass
of the antacid .
13. Record the data in result table.
8. RESULTS
• Take a picture of the before and after result of neutralisation
reaction and upload the picture to your experimental report.
• Mass of petridish + powdered antacid = _________ (m1)
• Mass of petridish + unused antacid = ___________ (m2)
• Mass of antacid used to neutralise dil HCl = m1 – m2
•
=
11. QUESTIONS
1. How much antacid was needed to neutralise 50 mL of dilute
HCl?
2. Compare your results with other groups. How accurate do you
think your measurement was? Explain your answer.
3. If your stomach contained 1 L of dilute HCl, how much
antacid powder would you need to neutralise it?
