Question

How we can prepare hydrogen from hydrocarbons​

Answer 1

Answer:

by hydrogenation i.e. conversion of alkanes to alkenes

Answer 2

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Reaction of steam on hydrocarbons or coke at high tempratures in the presence of catalyst yields hydrogen.

$\small\underline\mathtt\green{\fbox{C_nH_2n+2 + nH_2O \underset{Ni}{\xrightarrow{\text{1270K}}} nCO_2 + (2n + 1)H_2}}$

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For eg–$CH_{4 (g)}+ H_2O{(g)} \underset{Ni}{\xrightarrow{\text{1270K}}} CO_{2(g)} + 3H_2$

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