Question

Under the same conditions of temperature and pressure you collect 2 litres of carbon dioxide, 3 litres of chlorine, 5 litres of hydrogen, 4 litres of nitrogen and 1 litre of sulphur dioxide. In which gas sample will there be:

1. The greatest number of molecules;
2. The least number of molecules? Justify your answer.

Answer 1

Sol.: - (i) Hydrogen. (ii) Sulphur dioxide.

Justification : - According to Avogadro’s Law, under the similar condition of temperature and pressure, equal volume of all gases contain equal number of molecules. Therefore volume of Hydrogen is greater and so, it has greater number of molecules.

my source: https://www.icseguess.com/papers/important_papers/class_x/2010/chemistry/chemistry10c.php