MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryGaseous stateIdeal gas equation and its applications
The pressure of sodium vapour in a 1.0 L container is 10 torr at 1000ºC. How many atoms are in the container?
A.9.7 × 1017
B.7.6 × 1019✓ Correct
C.4.2 × 1017
D.9.7 × 1019
Explanation
where n= PV nRT PV w n RT M >> 10 (1) ( )(0.0821)(1273) 760 n >> 23 19 0.000125 No of atoms, 0.000125 6.023 10 7.6 10 A n N n N N N >> >> x >> x x >> x
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