Question

process is used for the industrial production of sulphuric acid.

• A. Contact
• B. Haber
• C. Ostwald's

Answer 1

The correct option is A Contact

Industrial production of sulphuric acid is done using the Contact Process. The production involves four stages -
1. Production of ${\mathrm{SO}}_2$:
$S+O_2\to S{O}_2$
2. Oxidation of ${\mathrm{SO}}_2$ :
$2{\mathrm{SO}}_2+O_2\stackrel{\mathrm{Vanadium}\mathrm{pentaoxide}}{\to }2{\mathrm{SO}}_3$
3. Absorption of ${\mathrm{SO}}_3$and formation of Oleum :
$S{O}_3+H_{2}S{O}_4\to H_2{S}_2{O}_7$
4. Dilution of $H_2{S}_2{O}_7$to produce sulphuric acid :
$H_2{S}_2{O}_7+H_{2}O\to 2H_{2}S{O}_4$