Question

Balanced equations for the manufacture of sulphuric acid by the contact process is
${2SO}_2+O_2\underset{V_2{O}_2}{\overset{{450}^{0}C}{\to }}{2SO}_x{SO}_3+H_2{SO}_4\to H_2{S}_2{O}_y{H}_2{S}_2{O}_7+H_{2}O\to 2H_2{SO}_4$
Find the value of x and y.

• A. $x=3,y=7$
• B. $x=2,y=7$
• C. $x=2,y=5$
• D. $x=3,y=5$

Answer 1

The correct option is A $x=3,y=7$

${2SO}_2+O_2\underset{V_2{O}_2}{\overset{{450}^{0}C}{\to }}{2SO}_3{SO}_3+H_2{SO}_4\to H_2{S}_2{O}_7{H}_2{S}_2{O}_7+H_{2}O\to 2H_2{SO}_4$