Question
In order to prepare a 24.0-liter volume (under ambient conditions) of a gas standard of bromofluorobenzene (BFB or CHBrF; liquid density=1.593 g/mL) at 50 ppmv
In order to prepare a 24.0-liter volume (under ambient conditions) of a gas standard of bromofluorobenzene (BFB or CHBrF; liquid density=1.593 g/mL) at 50 ppmv using a pre-evacuated 6.00-liter canister at 756 torr and 18 C, (a) what volume of the 98.9 % pure BFB liquid must be injected into the canister and (b) what is the final pressure the canister containing the BFB must be pressurized to with ultrahigh purity nitrogen gas? The canister is equipped with a differential pressure gauge measuring the pressure in psig unit. What are the concentrations of the BFB standard in micrograms per cubic meter (c) inside the 6.00-liter canister and (d) after the BFB from the pressurized canister is used to fill an empty Tedlar bag to 3.00 liters?
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