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How to prepare hydrogen gas from coal (water gas) ? |
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Answer» Solution :Step 1 : Steam is passed through coke at 1270 K and Ni as catalyst GIVES water GAS `[CO+H_(2)]` `underset(coke)C+underset("steam")(H_(2)O)underset(Ni)overset(1270K)tounderset("water gas")ubrace(Co(g)+H_(2)(g))` Step 2 : Steam is passed through water gas in presence of `Fe_(2)O_(3)+Cr_(2)O_(3)` catalyst at 773 K gives hydrogen. `underset("Water gase")(CO+H_(2))+underset("Steam")(H_(2)O)underset(773K)overset(Fe_(2)O_(3)+Cr_(2)O_(3))toCO_(2)+2H_(2)` |
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