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Question

The molecular weight of O2 and SO2 are 32 and 64 respectively. If one litre of O2 at 15 C and 750 mm pressure contains 'N' molecules, the number of molecules in two litres of SO2 under the same conditions of temperature and pressure will be

A
N/2
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B
N
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C
2N
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D
4N
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Solution

The correct option is C 2N

At same temprature and pressure, eqaul volumes have equal number of molecules.
If 1 lit. of oxygen consists N molecules then at same temprature and pressure 1 lit of SO2 will consists
N molecules. So 2 lit. of SO2 will contain 2N molecules.


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