A 23.0 gram sample of a gas occupies 11.2 Liters of volume at standard temperature and...

A 23.0 gram sample of a gas occupies 11.2 Liters of volume at standard temperature and pressure. The identity of this gas is mostly likely which of the following gases?

	A.	NO₂
	B.	CS₂
	C.	CH₃F
	D.	Ar
	E.	CH₂Cl₂

Expert Solution

From mole concept & Avogadro Law:- 22.4 Liters of any gas contains 1 mol of gas at Standard temperature pressure.

So 11.2 Liters of gas has = 1/2 mol of gas

Given that 11.2 Liters of gas has mass = 23 grams

That means 1/2 mol of gas has mass = 23 grams

So 1 mol of gas has mass = 23 x 2 = 46 grams

So the molar mass of unknown gas is equal to 46 grams

Now from options, NO2 has molar mass 46. So Unknown gas will be NO2 ( Nitrogen dioxide ).

For more detailed work, please refer to the image attached below.

queen_honey_blossom answered 3 years ago

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