First slide

Hydrogen

Question

$H_{2}$ gas can be prepared by reacting steam $[H_{2} O (g)]$ with

Moderate

A

Fe
B

hydrocarbon
C

red hot coke
D

all of these

Solution

$3 Fe + 4 H_{2} O \overset{Δ}{⇌} {Fe}_{3} O_{4} + 4 H_{2}$
$C_{n} H_{2 n + 2} + {nH}_{2} O \to_{Ni}^{1000^{o} C} nCO + (2 n + 1) H_{2}$
$C + H_{2} O \overset{1000^{o} C}{\to} CO + H_{2} \to_{{FeCrO}_{4} (catalyst)}^{steam H_{2} O} {CO}_{2} + 2 H_{2}$

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