Question

A tiny sample of Kr has effused through a pinhole in 78.0 s. the same amount of an unknown gas, under the same conditions, effused through the pinhole in 46.7 s. based on its molar mass, the unknown gas is most likely to be

A tiny sample of Kr gas effused through a pinhole in 78.0 s. The same amount of an unknown gas, under the same conditions, effused through the pinhole in 46.7 s. Based on its molar mass, the unknown gas is most likely to be: (a) HCN . (b) CO2 (c) C,H, (d) S03 (e) NHA

Answer 1

Rate of propostonal effecsion of gas is inversely to its Molar Mass Giver Same same volume of gas used. wed t,= 785 t₂ = 46.7 For Kr, Mi = 83-8 g/mol For Me = ? 78 83.8 46.7 27 Ca Ho has molar mars of 30 g/mol Opton c is correct.