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Question

In the equation PV=nRT which one cannot be numerically equal to R.

A
8.31×107 erg K1mol1
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B
8.31×107 dynes Cm K1mol1
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C
8.31 J K1 mol1
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D
8.31 L atm K1 mol1
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Solution

The correct option is D 8.31 L atm K1 mol1
Answer D.
In S.I unit, R=8.314J/mol/Kelvin
1J=107ergs
R=8.314×107ergs/mol/kelvin
And R=0.0821Latm/mol/K
1cal=4.18J,R=1.987Cal/mol/K.=8.31×107dynescm/mol/K

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