Step 1 : Identify the given
Volume = 250mL
Density = 1.19 g/ML
Step 2 . Calculate the mass of HCL
Density = mass/volume
∴Mass = Density * Volume
= 1.19g/mL* 250mL
= 297,5g
Step 3 : Calculate the total mass of the solution, given that concentration HCL is 38%
Mass of the total solution can be calculated by the following :
38% = Mc /297.5 * 100
Mc = 38/100 *297.5
= 113.05grams
• Finally, this means that mass of the total solution of 0.125M HCL i,s 113grams, ,you would use this mass to prepare 250 mL of 0.125 M HCl from concentrated HCl (aq) that is 38.0%