Chemistry - Thermochemistry Question with Solution | TestHub
During one of his adventures, Chacha Chaudhary got trapped in an underground cave which was sealed two hundred years back. The air inside was poisonous, having some amount of carbon monoxide in addition to and . Sabu, being huge, could not enter the cave. So, in order to save Chacha Chaudhary, he started sucking the poisonous air out of the cave by mouth. Each time he used to fill his lungs with cave air and exhale it out in the surroundings. In the meantime, fresh air from the surroundings effused into the cave till the pressure was again one atmosphere. Each time Sabu sucked out some air, the pressure in the cave dropped to half its initial value of one atmosphere. An initial sample of air taken from the cave measured 11.2 mL at 1atm, 273K and gave 7J on complete combustion at constant pressure. . Neglect any use of Graham's Law.
Sabu should rescue Chacha Chaudhary within 6 minutes else he will die. Precious 80 seconds are wasted in thinking of a way to rescue him. At maximum, how much time (in sec) should each cycle of inhaling-exhaling take? (Answer as the higher integral value).
Answer:
Solution:
From the previous part, Sabu needs 13 cycles to reduce CO level safely.
Total time available:
Time wasted = 80 s, so remaining time:
Time per cycle:
Maximum integral time per cycle: