The concentration unit used in Raoult's Law calculations is:

a. mole fraction
b. percent by weight
c. molarity
d. molality
e. none of these
I think the answer is A... is is corrent ?

answered above.

Yes, you are correct. The concentration unit used in Raoult's Law calculations is the mole fraction (option a). Raoult's Law relates the vapor pressure of an ideal solution to the mole fraction of the components present.

Yes, you are correct. The concentration unit used in Raoult's Law calculations is the mole fraction (option a).

To explain further, Raoult's Law is a fundamental principle in physical chemistry that describes the behavior of ideal solutions, where the vapor pressure of a component in an ideal solution is directly proportional to its mole fraction. The mole fraction is defined as the ratio of the moles of one component to the total moles of all components in the solution.

So, when applying Raoult's Law, you will need to use the mole fraction of each component to calculate the vapor pressure of that component in the solution.