Chemistry
Grade-8
Easy

Question

Which out of the following statements is true about the above given reaction?
2NaCl→2Na+Cl2

  1. Sodium chloride decomposes only after 200oC
  2. Sodium and chloride also can be separated by evaporation of NaCl
  3. The given chemical reaction is reversible
  4. The electricity is passed in the molten sodium chloride to get sodium and chlorine

hintHint:

The NaCl molecule breaks downs into its components.

The correct answer is: The electricity is passed in the molten sodium chloride to get sodium and chlorine


    • When an electric current is passed through molten sodium chloride, Na+ ions are reduced at the cathode (cathode), thus sodium is deposited at the cathode, and Cl- is deposited at the cathode.
    • As the ions are oxidized at the positive electrode (anode), chlorine gas is formed at the anode.

    Related Questions to study

    Grade-8
    Chemistry

    The colour of crystals of ferrous sulphate is:

    The colour of crystals of ferrous sulphate is:

    ChemistryGrade-8
    Grade-8
    Chemistry

    When water is added to calcium oxide solution, calcium hydroxide is obtained as product of this reaction.

    Identify the correct statement regarding the above experiment:

    When water is added to calcium oxide solution, calcium hydroxide is obtained as product of this reaction.

    Identify the correct statement regarding the above experiment:

    ChemistryGrade-8
    Grade-8
    Chemistry

    What is the common name for calcium oxide?

    What is the common name for calcium oxide?

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry

    Which of the following picture depicts the chemical reaction?

    Which of the following picture depicts the chemical reaction?

    ChemistryGrade-8
    Grade-8
    Chemistry

    Which of the following substances formed during the chemical reaction?

    Which of the following substances formed during the chemical reaction?

    ChemistryGrade-8
    Grade-8
    Chemistry

    How many reactants are participating in the following chemical reaction?
    straight N subscript 2 plus 3 straight H subscript 2 rightwards harpoon over leftwards harpoon with above space 200 atm on top 2 NH subscript 3 ?

    How many reactants are participating in the following chemical reaction?
    straight N subscript 2 plus 3 straight H subscript 2 rightwards harpoon over leftwards harpoon with above space 200 atm on top 2 NH subscript 3 ?

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry

    Which of the following gas obtained during photosynthesis reaction?

    Which of the following gas obtained during photosynthesis reaction?

    ChemistryGrade-8
    Grade-8
    Chemistry

    Identify the products obtained during the following chemical reaction?
    NH subscript 3 left parenthesis straight g right parenthesis plus HCl left parenthesis straight g right parenthesis rightwards harpoon over leftwards harpoon NH subscript 4 Cl open parentheses straight s close parentheses

    Identify the products obtained during the following chemical reaction?
    NH subscript 3 left parenthesis straight g right parenthesis plus HCl left parenthesis straight g right parenthesis rightwards harpoon over leftwards harpoon NH subscript 4 Cl open parentheses straight s close parentheses

    ChemistryGrade-8
    Grade-8
    Chemistry

    Read the following paragraph and answer the following question.
    When sulphuric acid reacts with carbonates, a salt like ferrous sulphate, water and CO2are formed as products. The carbon dioxide causes bubbling during the reaction.
    H subscript 2 S O subscript 4 plus F e C O subscript 3 rightwards arrow F e S O subscript 4 plus H subscript 2 O plus C O subscript 2
    The property, in which formation of gas bubbles in the liquid takes place during the above chemical reactions is called as

    Read the following paragraph and answer the following question.
    When sulphuric acid reacts with carbonates, a salt like ferrous sulphate, water and CO2are formed as products. The carbon dioxide causes bubbling during the reaction.
    H subscript 2 S O subscript 4 plus F e C O subscript 3 rightwards arrow F e S O subscript 4 plus H subscript 2 O plus C O subscript 2
    The property, in which formation of gas bubbles in the liquid takes place during the above chemical reactions is called as

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry


    In the chemical reaction the product molecules written on the:


    In the chemical reaction the product molecules written on the:

    ChemistryGrade-8
    Grade-8
    Chemistry

    _________ substance which accelerate the chemical reaction, however itself  doesn’t undergo any chemical change.

    _________ substance which accelerate the chemical reaction, however itself  doesn’t undergo any chemical change.

    ChemistryGrade-8
    Grade-8
    Chemistry

    If a reaction produces 28 grams, and one of its reactants had 12 grams, how much did the other reactant had?

    If a reaction produces 28 grams, and one of its reactants had 12 grams, how much did the other reactant had?

    ChemistryGrade-8
    parallel
    Grade-8
    Chemistry

    Which of the following statement is incorrect? 

    Which of the following statement is incorrect? 

    ChemistryGrade-8
    Grade-8
    Chemistry

    The true statement among the following is

    The true statement among the following is

    ChemistryGrade-8
    Grade-8
    Chemistry

    The molecular weight of HNO3  is _________.

    The molecular weight of HNO3  is _________.

    ChemistryGrade-8
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.