An evacuated glass vessel weights 40.0g when empty, 135.0g when filled with a liquid of density 0.95 g mL-1 and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mo-1 is:
(Given: R = 0.082 L atm K-1 mol-1)
An evacuated glass vessel weights 40.0g when empty, 135.0g when filled with a liquid of density 0.95 g mL-1 and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mo-1 is:
(Given: R = 0.082 L atm K-1 mol-1)
Option 1 -
35
Option 2 -
50
Option 3 -
75
Option 4 -
125
-
1 Answer
-
Correct Option - 4
Detailed Solution:Wt of liquid = 135 – 40 = 95 gm
Volume of liquid =
Hence volume of vessel = 100 ml = 0.1 lit from ideal gas equation,
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