The active mass of solids is taken as unity because it simplifies calculations and makes them easier to understand. It also allows for a direct comparison of the active mass of different substances, as they are all measured relative to the same standard.
No, the active mass of solids may vary depending on the substance. However, taking it as unity allows for a standardized comparison between different solids.
The active mass of solids is determined by dividing the mass of the substance by its molar mass. This gives the number of moles of the substance present, which is then compared to the standard unit of one mole.
Yes, in some cases, the active mass of solids may not be taken as unity. This is usually when dealing with substances that have a very low molar mass, as taking the active mass as unity may result in a value that is too small for practical use.
Using the active mass of solids allows for more accurate and precise calculations in chemistry and other scientific fields. It also helps to standardize measurements and allows for easier comparisons between different substances.