Chemistry - Ideal Gas Question with Solution | TestHub

A closed rigid bulb contains 0.01 mole of inert helium gas and a sample of solid white ammonium chloride, NH₄Cl. Assume that the volume of the solid NH₄Cl is negligible compared to the volume of the bulb. The pressure of He is measured at 300 K and is found to be 78 mm Hg. The bulb is then heated to 600 K. All the NH₄Cl decomposes to NH₃(g) and HCl(g). The final total pressure in the bulb after complete decomposition of the solid is 468 mm Hg. Assume ideal behaviour for all gases.