Indicate the number of equivalents in each of the following: 4 mol Cl^-
To determine the number of equivalents in a given amount of a chemical species, we need to consider the concept of equivalence. Equivalent is a unit of measurement used in chemistry to express the reactive capacity or the combining power of a substance. It is defined relative to a specific reaction or process.
To find the number of equivalents, we need to know the equivalent weight (also known as formula weight or gram equivalent weight) of the chemical species in question. The equivalent weight is the molar mass of the substance divided by the number of equivalents per mole.
In the case of chloride ions (Cl^-), the equivalent weight is equal to the molar mass of chlorine divided by the charge on the chloride ion, which is -1.
The molar mass of chlorine (Cl) is approximately 35.45 g/mol. Therefore, the equivalent weight of Cl^- is 35.45 g/mol / 1 equivalent = 35.45 g/equivalent.
Given that you have 4 moles of Cl^-, we can calculate the number of equivalents using the formula:
Number of equivalents = Number of moles × (1 equivalent / 1 mole)
= 4 mol × (1 equivalent / 1 mole)
= 4 equivalents
Therefore, there are 4 equivalents of Cl^- in 4 moles of Cl^-.