TS EAMCET 4-Aug-2021 Shift 2 Question Paper

The ratio of rate of diffusion of oxygen and unknown gas is =1:4
Molar mass of oxygen =32g∕mol
Using Graham's law of diffusion,
‌

‌ Rate ‌1

‌ Rate ‌2

=√‌

M2

M1

. . . (i)
Here, M1 and M2= molar masses of gases
M1=32g∕mol (for oxygen gas)
Put value in Eq. (i), we get
‌

1

4

‌=√‌

M2

32

‌
‌

√32

4

‌=√M2‌
M2‌=‌

32

16

‌‌[M2=2g∕mol]
So, unknown gas is hydrogen gas (H2).