A150 ml sample of hydrochloric acid (hcl) completely reacted with 60.0 ml of a 0.100 m naoh solution. the equation for the reaction is given below.

hcl + naoh mc011-1.jpg nacl + h2o

what was the original concentration of the hcl solution?

Answer : The original concentration of HCl is 0.04 M

Explanation:

According to the neutralization law,

where,

= molarity of NaOH solution = 0.100 M

= volume of NaOH solution = 60.0 ml

= molarity of HCl solution = ?

= volume of HCl solution = 150 ml

Now put all the given values in the above law, we get the molarity of HCl solution.

Therefore, the original concentration of HCl is 0.04 M