|WHAT IS WATER GAS?|
mixture of carbon monoxide and hydrogen gas is commonly known as water gas.
+ H2] ® water gas
It is used as a fuel.
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.
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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