JEE Main 2022 Chemistry question
17.0 g of completely vaporises at −33.42°C and 1 bar pressure and the enthalpy change in the process is 23.4 kJ . The enthalpy change for the vapourisation of 85 g of under the same conditions is kJ.
Answer: 117
Solution
The number of moles in 85 g of is 85/17 = 5 mol. So the enthalpy change is kJ.