Which test is used to detect nitrogen, sulfur, and halogens?

The test used to detect nitrogen, sulfur, and halogens is Lassaigne's test

The Lassaigne's test also known as sodium fusion test  is used in elemental analysis for the qualitative measurements of the presence of elements such as halogens, nitrogen, and sulphur, in any  organic compound. It was developed by J. L. Lassaigne. This is done by fusing the organic compound with sodium metal. The ionic compounds formed during the fusion are taken up in aqueous solution and can be detected by simple chemical tests taken in laboratory.

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 :