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QJEEM22Ch40ef: JEE Main 2022 Chemistry - Class 11 JEEM22Ch40ef Solution: 100 g of an ideal gas is kept in a cylinder of 416 L volume at…

100 g of an ideal gas is kept in a cylinder of 416 L volume at 27∘C under 1.5 bar pressure. The molar mass of the gas is __________ g mol−1. (Nearest integer)

(Given : R = 0.083 L bar K−1 mol−1)

Step-by-Step Verified Solution

Given, Mass of ideal gas = 100 gm

Let the molar mass of ideal gas = M

∴ Number of moles of gas (n) = 100M

Volume of cylinder (V) = 416 L

Temperature (T) = (27 + 273)K = 300 K

Pressure (P) = 1.5 bar

R = 0.083 L bar K−1 mol−1

Using ideal gas equation,

PV = nRT

⇒1.5×416=100M×0.083×300

⇒ M = 4

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