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.
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.
Mike said:
1 decade ago
Hydrogen is not the answer JUST because of weight. Relative temperature also has a role. Just remember nitrogen and hydrogen both have very different temperatures in their liquid states and gas states.
The answer IS Hydrogen, NOT nitrogen.
The answer IS Hydrogen, NOT nitrogen.
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.
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.
Pama said:
3 years ago
Hydrogen gas with higher temperature and lower molecular weight have higher molecular speed.
Among the given gases, hydrogen at 50°C has a maximum value of T/M and the highest speed. The correct option is A.
Among the given gases, hydrogen at 50°C has a maximum value of T/M and the highest speed. The correct option is A.
(1)
Daniel Olabode said:
3 years ago
Option A is correct using temp/molar mass.
H2:73/2 = 36.5,
CH4:300/16 = 18.45,
N2:1027/28 = 36.67,
O2:0/32 = 0.
H2 and N2 if we compare their masses hydrogen is the lightest.
I hope you will understand.
H2:73/2 = 36.5,
CH4:300/16 = 18.45,
N2:1027/28 = 36.67,
O2:0/32 = 0.
H2 and N2 if we compare their masses hydrogen is the lightest.
I hope you will understand.
(5)
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.
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.
Sachin said:
8 years ago
The root mean square velocity = square root of 3RT/ M.
Here T in kelvin and M in molar mass.
The value of T/M is higher for H2 among all given option.
So, velocity of H2 should be highest.
Here T in kelvin and M in molar mass.
The value of T/M is higher for H2 among all given option.
So, velocity of H2 should be highest.
Deepali said:
1 decade ago
Speed of the molecule is directly proportional to its temperature as the temperature is increased random motion of the molecule is also increases. Its right answer is (C).
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