Hydrogen manufactured by the BOSCH process is passed through water under pressure. Give reason.
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ANSWERE. Bosch method is used to prepare hydrogen on a large scale. When steam is passed over red hot coke, what is known as water gas is formed. Water gas is a mixture of mainly carbon monoxide and hydrogen containing some carbon dioxide. The water gas is mixed with excess steam and heated to 450°C . The mixture is passed over a catalyst containing of iron 3 oxide mixed with some chromium oxide . The CO abstracts oxygen from h2o to form CO2 and releases more hydrogen
The CO2 is removed from the mixture by dissolving it in water under pressure. (Remember that ordinarily CO2 is only slightly soluble in water but highly soluble in pressure.)
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