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(i) In the following schematic diagram f...

(i) In the following schematic diagram for the preparation of hydrogen gas as shown in figure , what would happen if following changes are made ?
(a) In place of zinc granules , same amount of zinc dust is taken in the test tube .
(b) Instead of dilute sulphuric acid , dilute hydrochloric acid is taken .
(c) Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated .
(ii) How do metal carbonates and metal hydrogencarbonates react with acids ?

Text Solution

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(i) (a) Hydrogen gas will evolve with greater speed.
(b) Almost same amount of gas is evolved.
(c) If sodium hydroxide is taken, hydrogen gas will be evolved .
`Zn +2NaOH rarrunderset("Sodium zincate")(Na_2ZnO_2)+H_2`
(ii) All metal carbonates and hydrogencarbonates react with acids to form a corresponding salt, carbon dioxide and water .
Metal carbonate + Acid `rarr` Salt + Carbon dioxide + Water
Metal hydrogencarbonate + Acid `rarr` Salt + Carbon dioxide + Water
For example , sodium carbonate reacts with dilute hydrochloric acid as follows :
`Na_(2)CO_(3)(s)+2HCl(aq) rarr2NaCl(aq)+H_(2)O(l)+CO_2(g)`
Sodium hydrogencarbonate reacts with dilute hydrochloric acid as follows :
`NaHCO_(3) (s) + HCl(aq) rarr NaCl(aq)+H_(2)O(l)+CO_(2)(g)`
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In the schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? (a) In place of zinc granules, same amount of zinc dust is taken in the test tube. (b) Instead of dilute sulphuric acid, dilute hydrochloric acid is taken. (c) Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated.

In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? In place of zinc granules, same amount of zinc dust is taken in the test tube.

Knowledge Check

  • Dilute sulphuric acid splits into

    A
    Oxygen ions, hydrogen ions and sulfate ions.
    B
    Hydrogen ions, oxygen ion and sulphate ions.
    C
    Hydrogen ions and sulphate ions.
    D
    Oxygen ions and hydrogen ions.

  • When sodium peroxide is treated with dilute sulphuric acid , we get

    A
    sodium sulphate and oxygen
    B
    sodium sulphate and hydrogen peroxide
    C
    sodium sulphate and water
    D
    sodium sulphate ,hydrogen and oxygen

  • When sodium peroxide is treated with dilute sulphuric acid, we get ……… .

    A
    sodium sulphate and water
    B
    sodium sulphate and oxygen
    C
    sodium sulphate , hydrogen and oxygen
    D
    sodium sulphate and hydrogen peroxide

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    In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? In place of zinc, copper turnings are taken.

    In the following schematic diagram for the preparation of hydrogen gas as shown in the figure what would happen if the following changes are made? (a) In place of zinc granules, same amount of zinc dust is taken in the test tube (b) Instead of dilute sulphuric acid, dilute hydrochloric acid is taken. (c) In place of zinc, copper turnings are taken (d) Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated.

    In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? Instead of dilute sulphuric acid, dilute hydrochloric acid is taken.

    In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated.

    Zinc is treated with dilute hydrochloric acid.

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