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 7 of 9.
Chemistry Nepal said:
1 decade ago
Its not like that.
The speed of gas is calculated by a relation.
Root Mean square velocity µ(rms) = (3RT/M).
From this relation we can calculate speed.
Only mass could not be taken into consideration here because temperature is specified.
So after calculation.
Speed of Hydrogen gas = 157380 unit.
Speed of Methane gas = 68385 unit.
Speed of Nitrogen gas = 142356 unit.
Speed of oxygen gas = 46128 unit.
The speed of gas is calculated by a relation.
Root Mean square velocity µ(rms) = (3RT/M).
From this relation we can calculate speed.
Only mass could not be taken into consideration here because temperature is specified.
So after calculation.
Speed of Hydrogen gas = 157380 unit.
Speed of Methane gas = 68385 unit.
Speed of Nitrogen gas = 142356 unit.
Speed of oxygen gas = 46128 unit.
RON said:
1 decade ago
v = 3RT/M
Given H2 have temp. -73+273= 346 c there mass is 2.
And N2 have temp. 1073+273 = 1346 there mass m 14.
So here on calculating we find Vh = 346 X 14.
Vn2 = 1346 X 2.
Vh = approx 2 times of H2.
Given H2 have temp. -73+273= 346 c there mass is 2.
And N2 have temp. 1073+273 = 1346 there mass m 14.
So here on calculating we find Vh = 346 X 14.
Vn2 = 1346 X 2.
Vh = approx 2 times of H2.
Nagaraju said:
1 decade ago
Hydrogen gas because it is lightest element than all it is easly moved.
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.
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
Rajani kanth reddy said:
1 decade ago
Hydrogen gas is right answer.
T.V.D.Prasad said:
1 decade ago
At high temperature velocity of gas molecules increases. Hence C is the answer.
Rajib Singh said:
1 decade ago
I think H2 is the correct ans because its TEMP/MASS is greater than other
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.
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.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers