chemistry class

Question

A solution contains 0.700 g Ca2+ in enough water to make a 1825 mL solution. What is the milliequivalents of Ca2+ per liter (mEq/L) for this solution?

Answer 1

The milliequivalent weight of C⁺² is atomic weight of Ca divided by 2 expressed in mg.

meqWt = 40.078 mg/2 = 20.039 mg/meq

0.7 g = 700 mg so 700 mg/20.039 mg/meq = 34.93 meq

34.93 meq /1825 mL x 1000 ml/1L = 19.1 meq/L