In a binary solution containing solvent and solute , let and denote their respective mole fractions, and and denote their moles. Which of the following statements are mathematically true?

Question

In a binary solution containing solvent $A$ and solute $B$, let $\chi_A$ and $\chi_B$ denote their respective mole fractions, and $n_A$ and $n_B$ denote their moles. Which of the following statements are mathematically true?

Prashant Kotian · Accepted Answer

Correct answer: A,B,D. The sum of all mole fractions in a mixture equals 1 (A). The ratio (B). Mole percent is precisely the mole fraction scaled by 100 (D). Mole fraction is based purely on counting moles and is completely independent of volume/temperature (C is false).

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