Chemistry - Ideal Gas Question with Solution | TestHub

Dry ice and ammonium dichromate mixture often used as an explosive in mining. Sometimes gun powder is also used. A hole is drilled, dry ice and a small amount of gun powder along with 0.1 mol of ammonium dichromate are placed in the hole at $25^{\circ }\mathrm{C}$. A fuse is added and the hole is plugged. When lit, the exploding gun powder rapidly vapourises the dry ice, and decomposition of ammonium dichromate into ${\mathrm{Cr}}_2{\mathrm{O}}_3(\mathrm{s}),{\mathrm{N}}_2(\mathrm{g})$ and ${\mathrm{H}}_2\mathrm{O}$ vapour occurs, so that immense pressure is developed. Assume 176 g of dry ice was placed initially in a cavity of 0.4 L of volume and final temperature of system is 800 K . Calculate pressure developed in atm .

Neglect the initial and final volume occupied by the solids.

[R = 0.08 atm-L/mole-K].