WATER GAS-INDUSTRIAL PREPARATION OF HYDROGEN GAS
WHAT IS WATER GAS?
    A mixture of carbon monoxide and hydrogen gas is commonly known as water gas.                                                    [CO + H2] ® water gas
    It is used as a fuel.
    PREPARATION:
    It is prepared by passing steam over red hot coke.                                                           
               C + H2O ® CO + H2
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    WHAT IS WASHING SODA?

    Sodium carbonate deca hydrated (Na2CO3.10H2O) is commonly known as washing soda.

    WHAT IS BAKING SODA?
    Sodium bicarbonate NaHCO3 is commonly known as baking soda.
    WRITE DOWN INDUSTRIAL PREPARATION OF HYDROGEN GAS?

    Hydrogen gas can be prepared by a lot of methods. Some important are as under.

    BY THERMAL DECOMPOSITION OF METHANE:

    When natural gas is heated up to 1000oC in the presence of catalyst, hydrogen gas is obtained.

                                                    CH4 ®C + 2H2

    BY COKE AND STEAM PROCESS:

    When super heated is passed over red hot coke, a mixture of carbon monoxide and hydrogen is     obtained which is known as water gas.

                                                  C + H2O ®CO + H2

    By liquefication method pure hydrogen is separated.

    BY THE ELECTROLYSIS OF WATER:

    When pure water containing a little amount of H2SO4 or any ionic salt is electrolyzed, pure hydrogen is     obtained.

    LANE’S METHOD:

    When steam is passed over red hot iron, hydrogen gas is obtained.

                                               3Fe + 4H2O ®Fe3O4 + 4H2

    BY THE THERMAL DECOMPOSITION OF AMMONIA:

    When ammonia gas is strongly heated it decomposes in to nitrogen and hydrogen.

                                               2NH3 ® N2 + 3H2

    N2 gas is separated by liquefication method.

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