- 1 Acid Bases and Salts Chapter 2
- 1.0.1 Acid Bases And Salt
- 1.0.2 Introduction
- 1.0.3 Properties of Acids
- 1.0.4 Properties of Bases
- 1.0.5 Types of Indicators and its Properties
- 1.0.6 Reaction of Acids & Bases with Metals
- 18.104.22.168 Reaction of Acids with Metal
- 22.214.171.124 Reaction of Base with Metal
- 126.96.36.199 Reaction of Acids with Metal Carbonates and Metal Hydrogencarbonates
- 188.8.131.52 Reaction of Acids and Bases with each other
- 184.108.40.206 Reaction of Metallic Oxides with Acid
- 220.127.116.11 Reaction of Non-Metallic Oxides with Base
- 18.104.22.168 Importance of pH in everyday life
- 22.214.171.124 Chemical from Common Salt
- 126.96.36.199 Water of crystallisation
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- 1.2 Related
Acid Bases and Salts Chapter 2
Acid Bases And Salt
This type of acid is obtained from natural sources e.g Ascorbic acid (Amla and Guava), Lactic acid (Milk), Citric acid (Lemon and Orange) etc.
Types of Indicators and its Properties
Reaction of Acids & Bases with Metals
Reaction of Acids with Metal
- Acids react with metal to form metal salt and releases Hydrogen Gas.
Acid + Metal → Hydrogen Gas
- Example: Zinc granules react with dilute Hydrochloric Acid in a test tube.
2HCl + Zn = ZnCl2 + H2
Reaction of Base with Metal
- Bases react with metal to evolve hydrogen gas. Also, note that all metal do not react with bases. The metal must be more reactive than the metals present in the base for the reaction to take place.
Base + Metal → Salt + Hydrogen Gas
- Example:Zinc granules react with NaOH solution to form Sodium Zincate & evolve Hydrogen Gas.
2NaOH + Zn = Na2ZnO2 + H2
- Hydrogen Gas released can be tested by bringing burning candle near gas bubbles, it burst with pop sound.
Reaction of Acids with Metal Carbonates and Metal Hydrogencarbonates
- Acids reacts with Metal Carbonates And Metal Hydrogencarbonates to form Salt, carbon dioxide and Water. Metal Carbonate/Metal Hydrogen Carbonate + Acid → Salt + Carbon dioxide + Water.
- Examples: (i) 2HCl + Na2CO3 = 2NaCl + CO2 + H2O
(ii) HCl + NaHCO3 = NaCl + CO2 + H2O
- CO2 can be tested by passing it through lime water. It turns Lime Water Milky.
Ca(OH)2 + CO2 = CaCO3 + H2O
- When excess CO2 is passed, milkiness disappears.
- Bases do not react with Metal Carbonates and Metal Hydrogencarbonates. Base + Metal Hydrogen Carbonate → No Reaction.
Reaction of Acids and Bases with each other
- Acids and bases react to form salt and water. Acid + Bases → Salt + CO2
- Neutralisation Reaction: Reaction of acid with base is called as neutralization reaction. Example: HCl + NaOH → NaCl + H2O
- Strong Acid + Weak Base → Acidic salt + H2O
- Weak Acid + Strong Base → Base salt + H2O
- Strong Acid + Strong Base → Neutral salt + H2O
- Weak Acid + Weak Base → Neutral salt + H2O
Reaction of Metallic Oxides with Acid
Reaction of Non-Metallic Oxides with Base
Importance of pH in everyday life
Chemical from Common Salt
Water of crystallisation
SCIENCE Revision Notes
Chapter:01 Chemical Reaction & Equation
Chapter:02 Acid Base & Salt
Chapter:03 Metals & Non Metals
Chapter:04 Carbon & its Components
Chapter:05 Periodic Classification of Elements
Chapter:06 Life Processes
Chapter:07 Control & Coordinates
Chapter:08 How do Organisms Reproduce
Chapter:09 Heridity & Evolution
Chapter:10 Light Reflection Refraction
Chapter:11 The Human Eye & the Colourful World
Chapter:13 Magnetic Effect of Electric Current
Chapter:14 Source Of Energy
Chapter:15 Our Environment
Chapter:16 Management of Natural Resource