Choose the appropriate technique below for separating these mixtures into their constituents. (Diffusion, Solvent Extraction, Chromatography, Sublimation, Fractional Distillation and Distillation.
I. Solid iodine and solid calcium carbonate
II. Pigments extracted from the bark of a tree
III. Solid sodium chloride and solid sulphur
IV. Water and propanol
V. Liquid
VI. Solid sodium carbonate and solid calcium
VII. Gaseous hydrogen and gaseous sulphur (iv) oxide.

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 :

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