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 2 of 9.
Kofi said:
1 decade ago
Gas molecules moves very high in the negatives because is more dry and therefore molecules can really move freely.
Claire said:
1 decade ago
Hydrogen is very light hence has ability to move fast but it is at low temperature. Methane though heavier than hydrogen is at very high temperatures which increases kinetic energy. This will now call for calculations i.e. temp/mass.
Okoh adem said:
1 decade ago
Everyone knows H2 is very light but the mass of others like N2 should be known for calculation: temp/mass.
SUNIL said:
1 decade ago
I think none got to the right concepts b4 posting...
speed v of gas molecule is related 2 both mass m & temp. T as given by
v ~ (T)1/2 / (m)1/2
sorry i can't write here as reqd. but it is, v proportional to whole to the under-root of T/m.
speed v of gas molecule is related 2 both mass m & temp. T as given by
v ~ (T)1/2 / (m)1/2
sorry i can't write here as reqd. but it is, v proportional to whole to the under-root of T/m.
Pinky said:
1 decade ago
According to kinetic theory of gases. Rms velocity of a gas= square root of 3RT/M. Therefore speed of a gas is proportional to under root of T/M where t is temp in kelvin and m is molar mass. Calculating this value we get hydrogen has highest speed.
Rajib Singh said:
1 decade ago
I think H2 is the correct ans because its TEMP/MASS is greater than other
T.V.D.Prasad said:
1 decade ago
At high temperature velocity of gas molecules increases. Hence C is the answer.
Rajani kanth reddy said:
1 decade ago
Hydrogen gas is right answer.
Jagdish wagh said:
1 decade ago
N2 is the correct ans.. coz speed of of gas is directly proportional to temperature..
but i am confused about mass of nitrigen
but i am confused about mass of nitrigen
Corey Boehm said:
1 decade ago
If they were all of equal mass and temperature then yes H2.
However according to collision theory, the higher the temperature, the more kinetic energy each particle will have and therefore more collisions occur producing products.
The closer to zero Kelvin, the less energy a particle has (at 0K particles have 0 kinetic energy).
The only correct answer would be C.
However according to collision theory, the higher the temperature, the more kinetic energy each particle will have and therefore more collisions occur producing products.
The closer to zero Kelvin, the less energy a particle has (at 0K particles have 0 kinetic energy).
The only correct answer would be C.
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