(a) Place the following gases in order of increasing average molecular speed at 25°C. Ne HBr SO2 NF3 CO <?
(a) Place the following gases in order of increasing average molecular speed at 25°C.
Ne
HBr
SO2
NF3
CO
<
Ne
HBr
SO2
NF3
CO
<
Ne
HBr
SO2
NF3
CO
<
Ne
HBr
SO2
NF3
CO
<
Ne
HBr
SO2
NF3
CO
(b) Calculate the rms speed of NF3 molecules at 33°C.
m/s
More Questions From This User See All
Answers & Comments
Verified answer
Use vrms = √(3RT/Mm) vrms at cnst T inversely proportional to the square root of MWt of gas
"where vrms is the root mean square speed, Mm is the molar mass of the gas, R is the molar gas constant, and T is the temperature in Kelvin".
(b) subt into equation use Mm in kg (SI); R = 8.315 J mol^-1 K^-1 vrms ~300 -400 ms^-1 I recall are typical
http://en.wikipedia.org/wiki/Root_mean_square_spee...