According to the ideal gas law, what is the approximately volume that will be occupied by 0.5 mole of an ideal gas at 30∘C and 3 atm pressure (gas constant R=0.0821 L atm mol−1 K−1)?
A
Less than 1L
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B
5L
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C
10L
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D
15L
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E
More than 20L
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Solution
The correct option is C5L
Given :
Pressure P = 3 atm
Volume V = ?
Number of moles n = 0.5
The gas constant R = 0.0821 L ⋅ atm / mol ⋅ K.
Absolute temperature T = 30 o C =273+30=303 K V=nRTP=0.5×0.0821×3033≃5 L Hence, the approximate volume occupied will be 5 L.