JEE Main Chemistry question
From the following data, the heat of formation of at 18°C is ….. kcal: ; …. (i) ; …. (ii) ; …. (iii)
Answer: (B)
Solution
Target: . Add (iii) + reverse of (ii) + (i): .
From the following data, the heat of formation of at 18°C is ….. kcal: ; …. (i) ; …. (ii) ; …. (iii)
Target: . Add (iii) + reverse of (ii) + (i): .