How many grams of NaCl are required to make 2.5 L of 0.125M of NaCl

 

182.625 gm

Step-by-step explanation

molarity=0.125M of NaCl

volume=2.5 L

M=mol/V

no. of moles =M X V

=0.125 M X 2.5 L

=3.125 mol

grams of NaCl = x

use molar mass of NaCl to convert moles into grams

(molecular weight of NaCl=58.44g)

x=3.125 mol NaCl x 58.44g NaCl / 1 mol NaCl

=182.625 gm