Question

Pure O2 diffuses through an aperture in 224 second, whereas mixture of O2 and another gas containing 80% O2 diffuses from the same in 234 second. The molecular mass of gas will be

• A. 51.5
• B. 48.6
• C. 55
• D. 46.6

Answer 1

Answer: (A)

51.5

Answer 2

= =

$\frac { 234 } { 224 } = \sqrt { \frac { \mathrm { M } _ { \text {mix } } } { 32 } }$

Mmix = 34.92

.

Mgas = 51.5