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In the laboratory preparation of hydroch...

In the laboratory preparation of hydrochloric acid, HCl gas is dissolved in water.
Write the chemical equations for the laboratory preparation of HCl gas when the reactants are:
(A) below `200^@C` (B) above `200^@C`

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To aviod the formation of sodium sulphate as it sticks to the glass surface and lot fo fuel is wasted .
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ICSE-SAMPLE QUESTION PAPER -4-SECTION - II
  1. With respect to the laboratory preparation of hydrochloric acid ans...

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  2. With respect to the laboratory preparation of hydrochloric acid ans...

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  3. In the laboratory preparation of hydrochloric acid, HCl gas is dissolv...

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  4. With respect to the laboratory preparation of hydrochloric acid ans...

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  5. Name the method used for obtaining ammonia on a large scale .

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  6. What is the actual ratio of the reactants ?

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  7. The temperature used is 450^(@)C . Explain why ? (A) A lower tempe...

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  8. Write the reaction of sodium with water.

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  9. An element X belongs to 3rd period and group II of the periodic tabl...

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  10. An element X belongs to 3rd period and group II of the periodic tabl...

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  11. An element X belongs to 3rd period and group II of the periodic tabl...

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  12. An element X belongs to 3rd period and group II of the periodic tabl...

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  13. State modern periodic law of classification of elements.

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  14. Atomic size increases down a group of the periodic table. Explain.

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  15. Give reason why ? People suffering from acidity are advised to dr...

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  16. Give reasons why : Sodium chloride will conduct electricity only in...

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  17. Give reason why ? Anhydrous HCl is a poor conductor while aqueous ...

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  18. Give reasons for the following : (i) Methane does not undergo addit...

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  19. Write balanced equation for the following: (i) Preparation of ethane...

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  20. Write the equation for the ethene from iodoethane

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