General Knowledge - Chemistry - Discussion
Discussion Forum : Chemistry - Section 1 (Q.No. 7)
7.
The molecules of which gas have highest speed?
Discussion:
83 comments Page 6 of 9.
Nikhil kanaujia said:
1 decade ago
Hydrogen is the correct answer as we know that speed is directly proportional to temperature and inversely to mass of the the given molecule.
So greater the mass of molecule lower will be the speed.
So greater the mass of molecule lower will be the speed.
Rahul kumar said:
1 decade ago
Smaller the size higher the mobility.
AKSHAY said:
10 years ago
Kinetic Energy is directly proportional to its temperature according to kinetic theory of gas.
Aaliya khan said:
10 years ago
Option A is correct because speed of molecule is inversely proportional to the mass of an atom, as hydrogen has lowest atomic no and atomic mass. Hence it can have highest speed of flowing.
Venkatesh said:
10 years ago
Speed depends on temp and molecular mass, hence by the formula 3rt/m H2 is the answer.
Munireddy tm said:
10 years ago
I think option B because at higher temperature the gas molecules having more kinetic energy.
Jeffrin said:
10 years ago
Guys, please take a closer look in option A.
The temp is of a negative sign (-73).
All of us knows that the speed of the gas is directly proportional to temp.
If the temp is very low then how can the speed increase even though it has a low mass?
The temp is of a negative sign (-73).
All of us knows that the speed of the gas is directly proportional to temp.
If the temp is very low then how can the speed increase even though it has a low mass?
Shivaranjani said:
9 years ago
I agree with @Jeffrin.
V is directly proportional to T.
With the decrease in temperature, attraction between the hydrogen molecules take place which will limit the movements of particles. This leads to decrease in kinetic energy which results in less speed of molecules. Thus, option A is incorrect.
V is directly proportional to T.
With the decrease in temperature, attraction between the hydrogen molecules take place which will limit the movements of particles. This leads to decrease in kinetic energy which results in less speed of molecules. Thus, option A is incorrect.
Gireesh said:
9 years ago
According to me, the given answer A is correct.
Chem lover said:
9 years ago
Hydrogen will have the highest speed by the formula of root mean square velocity = square root of 3RT/ M.
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