Question

What is the concentration of an HCl solution if 25.0 ml of the solution requires 35.0 ml of 0.10 M NaOH solution to reach the endpoint of titration?

Answer 1

To find the concentration of the HCl solution, we can use the concept of titration and the equation:M1V1 = M2V2where M1 and V1 are the molarity and volume of the HCl solution, and M2 and V2 are the molarity and volume of the NaOH solution.We are given:V1 = 25.0 mL  volume of HCl solution M2 = 0.10 M  molarity of NaOH solution V2 = 35.0 mL  volume of NaOH solution We need to find M1  the concentration of the HCl solution . Rearranging the equation to solve for M1, we get:M1 =  M2 * V2  / V1Now, plug in the given values:M1 =  0.10 M * 35.0 mL  / 25.0 mLM1 = 3.50 M / 25.0M1 = 0.14 MSo, the concentration of the HCl solution is 0.14 M.