Question

According to Avogadro's hypothesis, equal volumes of gases under the same conditions of temperature and pressure will contain:

• A. the same number of molecules
• B. different number of molecules
• C. the same number of molecules only if their molecular masses are equal
• D. the same number of molecules if their densities are equal.

Answer 1

The correct option is A the same number of molecules

According to avogadro's hypothesis, equal volumes of gases under the same conditions of temperature and pressure will contain, the same no. of molecules.

For eg. One volume of hydrogen combines with one volume of chlorine to produce two volumes of HCl gas.

$H_{2}1vol$ $+$ $C{l}_2=1vol$ $2HCl2vol$