Silicon Tetraflouride?

How many grams of silicon tetraflouride, a gas, at room temperature, would fill the same volume as that occupied by 350 grams of carbon monoxide at 75C and 575 torr?

Answer:
Use the ideal gas law to find it PV=nRT

CO MW = 28.0101 g/mole
SiF MW = 104.08 g/mole
R = 62.364 L •Torr/ K • mole

Part one, find the volume from the first data for CO

350 g/28.0101g/mole = 12.4955 mole
P = 575 Torr
T = 75 ºC + 273 = 348 K

V = nRT/P = (12.4995 mole) (62.364 L •Torr/ K • mole) (348 K) / 575 Torr

= 471.78 L

Now use this Volume to find the moles and grams of SiF4

P = 760 Torr
V= 471.78 L
T = 25ºC + 273 = 298 K

n = PV/RT = (760 Torr) (471.78 L) / (62.364 L •Torr/ K • mole) (298 K)

= 19.29 moles

19.29 mole SiF4 * (104.08g/mole) = 2008g

The answers post by the user, for information only, FunQA.com does not guarantee the right.

FunQA.com

Silicon Tetraflouride?

Topic