Answered: How to determine mole fraction? this…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter12: Solutions

Section: Chapter Questions

Problem 12.36QE: A 2.77 M NaOH solution in water has a density of 1.109 g/mL. Express the concentration of this...

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How to determine mole fraction?

this is relating to finding the concentrationof sucrose in soda.

how can I find the mole fraction if percent mass:0.3168% and concentration in M is: 3.168 M.

I added 50.00 mL of soda

Expert Solution

Step 1

Mole fraction is defined as the no. of mol of a particular component present in the total mol of solution. It is denoted by X_i.

It is given by:

$\begin{array}{rcl} χ_{i} & = & \frac{no . of mol of solute}{Total mol of solution} \\ χ_{A} & = & \frac{n_{A}}{n_{A} + n_{B}} . . . . . . (1) \end{array}$

Mole fraction is a fraction, thus it is a unitless quantity.

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