JEE Main & Advanced
Chemistry
Thermodynamics / रासायनिक उष्मागतिकी
Question Bank
Heat of reaction
question_answer
If \[S+{{O}_{2}}\to S{{O}_{2}};\,(\Delta H=-298.2)\] \[S{{O}_{2}}+\frac{1}{2}{{O}_{2}}\to S{{O}_{3}};\,(\Delta H=-98.2)\] \[S{{O}_{3}}+{{H}_{2}}O\to {{H}_{2}}S{{O}_{4}};\,(\Delta H=-130.2)\] \[{{H}_{2}}+\frac{1}{2}{{O}_{2}}\to {{H}_{2}}O;\,(\Delta H=-287.3)\] then the enthalpy of formation of \[{{H}_{2}}S{{O}_{4}}\] at 298K will be [DPMT 1983; Orissa JEE 2005]