Chemistry gas law help?
I need help with this: An 805 mL sample of gas is collected at 382 mm Hg and 273C . what volume would the sample occupy at stp? And can you please put a step by step how to do it so i can understand it please and thankyou.
- Lexi RLv 79 years agoFavorite Answer
STP is standard temperature and pressure, which is 0 deg celcius (273 Kelvin) and 1 atm (760 mmHg)
Use the combined gas equation
P1V1 / T1 = P2V2 / T2
P1 = initial pressure = 382 mmHg
V1 = initial volume = 805 ml
T1 = initial temp = 273 deg C = 273 deg C + 273 = 546 K
P2 = final pressure = 760 mmHg
V2 = final volume = ? ml
T2 = final temperature = 273 K
solve for V2
V2 = P1V1T2 / (P2T1)
= 382 mmHg x 805 ml x 273 K / (760 mmHg x 546 K)
= 202 ml