Question

5. Five grams each of the following gases at 87°C and 750
mm pressure are taken. Which of the them will have the
least volume?
[F=19, CI = 35.5, Br = 80, 1 = 127]
(a) HF
(b) HCI
(c) HBr
(d) HI​

Answer 1

Answer:

At given temperature and pressure , volume of a gas depends upon its number of moles.

volume of gas=number of moles the gas = mass of the gas/ molecular mass of the gas.

because mass of all the gas is same.

Thus

the gas with minimum molecular mass will have the maximum volume.

Here HF has the minimum molecular mass thus its volume will be maximum.