Question

A chemist prepares a sample of hydrogen bromide
and finds that it occupies 205 mL at
68◦C and 454 Torr. What volume would it
occupy at 0◦C at the same pressure?
Answer in units of mL.

Answer 1

P1V1/T1 = P2V2/T2
454 Torr x 205 mL / (68 + 273) K = 454 Torr x V2 / (0 + 273)
V2 = 164 mL
Answer: 164 mL.