Question

Steam is passed over hot coke at 1000${}^{\mathrm{o}}\mathrm{C}$ in a converter to produce Hydrogen gas$\left({\mathrm{H}}_2\right)$.

• A. True
• B. False

Answer 1

The correct option is A True

Preparation of Hydrogen by Bosch's process:

• Bosch's involved in the following steps:
• Step 1 - Production of water gas: Steam is passed over hot coke at 1000${}^{\mathrm{o}}\mathrm{C}$ in a converter to produce water gas $(\mathrm{CO}\hspace{0.17em}+\hspace{0.17em}{\mathrm{H}}_2)$

$$\begin{gathered} \mathrm{C}\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)\to \mathrm{CO}\left(\mathrm{g}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right) \\ \mathrm{Coke}\mathrm{Steam}\mathrm{Water}\mathrm{gas} \end{gathered}$$

• The reaction is endothermic.
• Step 2 - Separation of Hydrogen: Steam is mixed with water gas and passed over heated Iron(lll) oxide $\left({\mathrm{Fe}}_2{\mathrm{O}}_3\right)$ and Chromium(lll) oxide $\left({\mathrm{Cr}}_2{\mathrm{O}}_3\right)$ at 450-500 ${}^{\mathrm{o}}\mathrm{C}$ to get a mixture of Carbon dioxide and Hydrogen.

$$\begin{gathered} (\mathrm{CO}+{\mathrm{H}}_2)\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)\underset{{\mathrm{Fe}}_2{\mathrm{O}}_3}{\overset{450-500{}^{\mathrm{o}}\mathrm{C}}{\to }}{\mathrm{CO}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right) \\ \mathrm{Water}\mathrm{gas}\mathrm{Steam}\mathrm{Carbon}\mathrm{Hydrogen} \\ \mathrm{dioxide} \end{gathered}$$

• The reaction is exothermic.