Chemistry - Ideal Gas Question with Solution | TestHub
Chemical explosions are characterised by the instantaneous release of large quantities of hot gases, which set up a shock wave of enormous pressure and velocity. Explosion of a compound X releases four gases A, B, C and D.
n X a A(g) + b B(g) + c C(g) + d D(g)
Assume that the explosion of 1 mol of X releases gases with a temperature of 2727°C and a volume of 3.0 l at 410 atm pressure. (R = 0.0821 l-atm/K-mol)
When the products released by explosion of 0.02 mole of X were placed in a 821 ml flask and the flask was cooled to -23°C, product 'A' solidified and the pressure inside the flask was 1.5 atm. How many moles of A were present and what is its likely identity? Neglect the volume of solid formed.
Options:
Answer:
Solution:
Gas remaining at 250 K: n = 1.5 × 0.821/(0.0821 × 250) = 0.06 mol. n(A) = 0.1 - 0.06 = 0.04 mol. Only H₂O among common explosion products solidifies at -23°C. Hence (a).
