Answer to Question #144001 in General Chemistry for Javier

Question

If Na+ is the only cation in the solution, what is the Na+ concentration in milliequivalents per liter?

Answer 1

The idea here is that you need to use the fact that a solution is electrically neutral to determine how many milliequivalents of sodium cations are needed to balance the milliequivalents of the two anions. equivalent for an ion is calculated by multiplying the number of moles of that ion by its valence.

You know that a solution is electrically neutral, so

no. of mEq anions = no. of mEq cations

Because sodium is the only cation present in this solution, its number of milliequivalents must be equal to the total number of milliequivalents for the anions.