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Chemistry · Some Basic Concepts of Chemistry
हिन्दीWhat is the mole fraction of a substance 'A' in a binary solution if the number of moles of 'A' is \( n_A \) and the number of moles of 'B' is \( n_B \)?
Correct answer · Option 4
\( \frac{n_A}{n_A + n_B} \)
Explanation
Mole fraction of component A is defined as the ratio of moles of A to the total moles of all components in the solution: \( \chi_A = \frac{n_A}{n_A + n_B} \).
