Question

which of the following ideal gas would have minimum average speed at room temperature is:-
I)Cl2
II)N2o
III)C2h6
IV)So3​

Answer 1

Answer:

cl2

Explanation:

Chlorine gas has the lowest root mean square speed at 25

o

C as it has highest molar mass (71 g/mol)

Answer 2

the ideal gas which have minimum average speed at room temperature is Cl2.

1. among the given gases, chlorine gas has the lowest average speed because it has the highest molecular mass.
2. the formula of average speed is inverse of root mean square of the molar mass.
3. therefore, V rms​=√3RT/M, M = MOLAR MASS.
4. so higher the molar mass, lowest is the average speed.
5. among the given gas, chlorine has the highest molar mass which is 35.5, so it has the minimum average speed.

hence, the correct option is I)Cl2