Question

What do you understand by the statement “the vapor density of carbon dioxide is $22$”?

Answer 1

Relative vapor density

• Relative vapor density is defined as the mass of a given volume of a gas in comparison to the mass of the same volume of hydrogen at same pressure and temperature conditions.
• Vapor density for a gas or vapor calculated as follows:

$\mathrm{Vapor}\mathrm{density}=\frac{\mathrm{Mass}\mathrm{of}\mathrm{one}\mathrm{molecule}\mathrm{of}\mathrm{the}\mathrm{gas}/\mathrm{vapor}}{\mathrm{Mass}\mathrm{of}\mathrm{one}\mathrm{molecule}\mathrm{of}\mathrm{hydrogen}}$

• The vapor density of carbon dioxide is $22$, which means that one molecule of carbon dioxide is $22$ times heavier than one molecule of hydrogen.