Question

calculate the pressure if nitrogen triflouride in atmospheres if 271.7 g are present in 60.0 L vessel at a tenperature if 48 C (R=0.08206 L x atm x mol^-1 x K^-1)

answer atm( number only

what is the chemical formula for trifluoride?

Answer 1

Answer :

Chemical formula of nitrogen trifluoride = NF3

Given, mass of NF3 taken = 271.7 g

Volume of vessel = 60 L

Temperature (T) = 48°C = 321 K

( Since , 0°C = 273 K )

R (gas constant) = 0.08206 L atm / ( mol-K)

Molar mass of NF3 = 71 g/mol

Moles of NF3 ( n) = mass of NF3 taken / molar mass

= 271.7 g / 71 g/mol = 3.827 mol

Using ideal gas equation to calculate pressure (P)

PV = nRT

P = nRT / V

= 3.827 * 0.08206 * 321 / 60

= 1.68 atm

Pressure (atm ) = 1.68