Facebook Twitter Instagram
    ScienceMotive
    • Class 9
      • Matter in Our Surroundings
      • Is Matter Around Us Pure
      • Atoms and Molecules
      • Structure of the Atom
      • The Fundamental Unit of Life
    • Class 10
      • Chemistry
    • Class 11
      • Chemisrty
        • Chapter – 1 Some Basic Concepts of Chemistry
        • Chapter – 2 Structure Of Atom
        • Chapter – 3 Classification of Elements and Periodicity in Properties
        • Chapter – 4 Chemical Bonding and Molecular Structure
        • Chapter – 5 States of Matter
        • Chapter – 6 Thermodynamics
        • Chapter – 7 Equilibrium
        • Chapter – 8 Redox Reaction
        • Chapter – 10 s-Block Elements
        • Chapter – 13 Hydrocarbons
    • Class 12
      • Chemistry
        • The Solid State
        • Solutions
        • Electrochemistry
        • Chemical Kinetics
        • Surface Chemistry
        • p – Block Elements
        • d & f Block Elements
        • Coordination Compounds
        • Haloalkanes and Haloarenes
        • Alcohols, Phenols and Ethers
        • Aldehydes, Ketones and Carboxylic Acids
        • Amines
        • Biomolecules
        • Polymers
        • Chemistry in Everyday Life
    • Practice Questions
      • +1
      • +2
    • Test Series
      • Class 9 Test Series
      • Class 10 Test Series
      • Class 11 Test Series
      • Class 12 Test Series
    • World
      • Current Affairs
      • General Knowledge
    ScienceMotive
    Home » Bases its Properties and Uses Class 10

    Bases its Properties and Uses Class 10

    Dr. Vikas JasrotiaBy Dr. Vikas JasrotiaFebruary 18, 2021No Comments
    Share
    Facebook WhatsApp Telegram Twitter Email

    Bases its Properties and Uses Class 10

    BASES:
    Substances that change red litmus solution blue are called bases. They are bitter in taste.
    They release hydroxide ions (OH–) when dissolved in water. They have a soapy touch (e.g. Washing soda, caustic soda, and caustic potash).

    CLASSIFICATION OF BASES:
    1. Based on Ionisation:
    (a) Strong Bases: These are bases that ionise completely in an aqueous solution eg. NaOH, KOH.
    (b) Weak Bases: These are bases that ionise partially in an aqueous solution eg. NH4OH, Ca(OH)2.

    2. Based on their Acidity:
    (a) Monoacidic Base: It is a base that ionises in water to give one hydroxide ion per molecule eg. NaOH, KOH.
    (b) Diacidic Base: It is a base that ionises in water to give two hydroxide ions per molecule eg.  Ca(OH)2, Mg(OH)2.
    (c) Triacidic Base: It is a base that ionises in water to give three hydroxide ions per molecule eg. Al(OH)3, Fe(OH)3.

    Bases its Properties and Uses Class 10

    3. Based on the Concentration:
    Depending upon the amount of water added to a base, bases are classified as concentrated and dilute Bases.
    (a) Concentrated alkali: It is an alkali having a relatively high percentage of alkali in its aqueous solution.
    (b) Dilute alkali: It is an alkali having a relatively low percentage of alkali in its aqueous solution.

    Chemical Properties of Base:
    (a) Reaction of Base with Metals:
    When alkali (base) reacts with metal, it produces salt and hydrogen gas.
    Alkali + Metal → Salt + Hydrogen
    Example 1. Sodium aluminate and hydrogen gas are formed when sodium hydroxide reacts with aluminium metal.
    2 NaOH + 2 Al + 2 H2O → 2 NaAlO2 + 2 H2
    Example 2. Sodium hydroxide gives hydrogen gas and sodium zincate when reacts with zinc metal.
    2 NaOH + Zn → Na2ZnO2 + H2

    (b) Reaction of Non-Metallic Oxides with Base:
    Non- metallic oxides react with a base to produce Salt and Water
    Non-metallic oxide + Base → Salt + Water
    Example. Ca(OH)2 + CO2 → CaCO3 + H2O
    Non Metallic oxides are said to be acidic in nature because on reacting with a base they produce Salt and Water.

    Bases its Properties and Uses Class 10

    (c) Action of Alkalis/Base with Ammonium Salts:
    Alkalis combine with ammonium salts to liberate ammonia.
    Alkali + Ammonium salt   →   Salt   +  Water  +  Ammonia
    Example. Calcium Hydroxide when reacting with ammonium chloride produce calcium chloride water and ammonia
    Ca(OH)2 + NH4Cl  →  CaCl2 + H2O + NH3

    USES OF BASES:
    (i) Magnesium hydroxide is used as a medicine for stomach troubles.
    (ii) Ammonium hydroxide is used to remove grease stains from clothes.
    (iii) Sodium hydroxide is used in the manufacture of soap.
    (iv) Calcium hydroxide is used in whitewashing the buildings.

     

    Bases its Properties and Uses Class 10

    Advertisement
    Bases Properties Uses
    Share. Facebook Twitter Pinterest LinkedIn Tumblr Email
    Dr. Vikas Jasrotia
    • Website

    Related Posts

    Carbon and Its Compounds

    January 23, 2023

    An element X (atomic number = 17) reacts with an element Y (atomic number = 20) to form a divalent halide.

    January 10, 2023

    Mendeleev Periodic Table PDF

    March 4, 2022

    Leave A Reply Cancel Reply

    READ ALSO

    Periodic Classification of Elements Questions PDF (Answers)

    March 1, 2023

    Periodic Classification of Elements Questions

    February 28, 2023

    Carbon and Its Compounds Class 10 Solutions of Practice Questions

    February 22, 2023

    Carbon and Its Compounds Class 10 Practice Questions

    February 21, 2023
    Class 10 Test Series

    Periodic Classification of Elements Questions PDF (Answers)

    By Dr. Vikas JasrotiaMarch 1, 2023

    Periodic Classification of Elements Questions PDF (Answers) Periodic Classification of Elements Questions PDF Ans 1.…

    Class 10 Test Series

    Periodic Classification of Elements Questions

    By Dr. Vikas JasrotiaFebruary 28, 2023

    Periodic Classification of Elements Questions Periodic Classification of Elements Questions Que 1. What is the…

    Class 10 Test Series

    Carbon and Its Compounds Class 10 Solutions of Practice Questions

    By Dr. Vikas JasrotiaFebruary 22, 2023

    Carbon and Its Compounds Class 10 Solutions of Practice Questions Carbon and Its Compounds Class…

    Advertisement
    Advertisement
    Facebook Twitter Instagram Pinterest YouTube
    • Disclaimer
    • Contact Us
    • Privacy Policy 
    • Terms and Conditions
    © 2023 All Rights Reserved ScienceMotive.

    Type above and press Enter to search. Press Esc to cancel.