5 Questions
What is the characteristic taste of acids?
Sour
What is the product of the reaction between an acid and a base?
Salt and water
What is the reaction between an acid and a metal carbonate or metal hydrogen carbonate?
Salt and carbon dioxide
What is the characteristic of a concentrated acid?
More amount of acid + Less amount of water
What is the reaction between an acid and a metal?
Salt and hydrogen gas
Study Notes
Characteristics of Acids
- Acids have a sour taste
- They turn blue litmus to red
- They give positive hydrogen (H+) ions in water solution
Types of Acids
- Strong Acids: HCl (Hydrochloric Acid), H2SO4 (Sulphuric Acid), HNO3 (Nitric Acid)
- Weak Acids: CH3COOH (Acetic acid), Oxalic Acid, Lactic Acid
- Concentrated Acids: have more amount of acid and less amount of water
- Dilute Acids: have more amount of water and less amount of acid
Chemical Properties of Acids
Reaction of Acid with Base
- Acid + Base → Salt + Water
- This reaction is called Neutralization reaction
- Examples: KOH + HCl → KCl + H2O
Reaction of Acid with Metal
- Acid + Metal → Salt + Hydrogen gas
- Example: Mg + 2HCl → MgCl2 + H2
Reaction of Metallic Oxides with Acids
- Metal oxide + Acid → Salt + Water
- Example: CuO + HCl → CuCl2 + H2O
Reaction of Acid with Metal Carbonate and Metal Hydrogen Carbonates
- Acid + Metal carbonate/Metal hydrogen Carbonate → Salt + CO2 + H2O
- When an acid reacts with a metal carbonate (MCO3) or metal hydrogen carbonate (MHCO3), it gives the corresponding salt, carbon dioxide (CO2) gas and water
This quiz covers the characteristics and properties of acids, including their taste, reaction with litmus, and ionization in water. It also explores the different types of acids, such as strong and weak acids, and concentrated and dilute acids.
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