Which of the following sets of empirical formula, molar mass, and molecular formula is correct?
CH, 78 g, C13H13
C3H80, 120 9, C3H802
CH4N, 90 g, C3H12N3

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

increased stability in the completion of fluorine's outer shell.

i think that the answer is c