Question

how much MgSO4 is needed to make 100mL of a 50.0mEq/L Mg2+ solution

Answer 1

Answer: given; 50.0 meglk mga solution; ccommenting it_mole fiam 1 mEqlLan-factor X. 10-3 mole L. let us consider ngm of mg soy is required. no. of moles of my soy required = n gmoles. molarity n x 1000. I total volume of solvent (mL) . - 20.37 molarity = a DC x1000 . 120.37 X100 : lox 120.37 moles/L. Now for Eq/L, we have to divide by 120.37 120.37 Equivalent weight of my soy which is 120.37/2 Normality = 20x Eq/L = 20 2 x 103 mg/l gövso normality -- 50.0 mkg .. puting 50 = 2011_x1000 = solving for x; - =_ 0.3009259 Hence Mg Soy required is 0.3009259 about -