Answer :-
Firstly a balanced chemical equation between NaOH and HCl is written then using the stoichiometry, concentration of HCl is calculated.
The answer is given in the image,

A solution of HCl has an unknown concentration. 10.00 mL of the HCl solution was measured...
In the titration of 26.3 mL of HCl of unknown concentration, the phenolphthalein indicator present in the colorless solution turns pink when 28.4 mL of 0.132 M NaOH is added. Show the calculation of the molarity of the HCl.
A chemist had a bottle of HCl (aq) of unknown concentration. She performed a titration experiment in order to determine its concentration. She pipeted 25.00 mL of the HCl solution into an Erlenmeyer flask. She then added about 21 mL of deionized water and 3 drops of phenolphthalein indicator dye to the flask. She titrated this mixture with 0.09063 M NaOH (aq), and obtained a permanent, pale pink endpoint after the addition of 36.68 mL of NaOH (aq). Given that...
3. A student pipetted 25.00 mL of a 0.2531 M solution of HCl into an Erlenmeyer flask. After adding 3 drops of phenolphthalein indicator to the flask, the student started adding NaOH from the burette, until the color in the Erlenmeyer flask turned light pink, The student calculated that 21.40 mL NaOH was transferred in the flask to neutralize the acid. a) Calculate the number of moles of HCl initially present (Reaction: NaOH(aq) + HCl(aq) -NaCl(aq) + H2O() b) Calculate...
The titration of 10.00 mL of an HCl solution of unknown concentration requires 50.75 mL of 0.0621 M KOH solution to reach equivalence. What is the concentration of the HCl solution in M (mol/L).
Suppose that 10.00 mL HCl of unknown concentration is neutralized by 20.00 mL of a 1.50 M NaOH solution. Determine the concentration of the HCl solution 1.50 M HCI 3.00 M HCI 0.0750 M HCI 0.150 M HCI
The titration of 10.00 mL of an HCl solution of unknown concentration requires 50.75 ml of 0.0621 M KOH solution to reach equivalence. What is the concentration of the HCI solution in M (mol/L). give your answer to two decimal places
The titration of 10.00 mL of an HCl solution of unknown concentration requires 507.5 mL of 0.0621 M KOH solution to reach equivalence. What is the concentration of the HCI solution in M (mol/L). give your answer to two decimal places I
A titration of 20.00 mL of an unknown HCl solution with 0.2350 M NaOH starts at a buret reading for NaOH of 0.350 mL. The phenolphthalein indicator turns light pink in the acid solution for over 30 seconds at a buret reading of 25.14 mL. Maintain 3 significant figures but do not include the units. a. What was the volume of NaOH dispensed? b. How many moles of NaOH were dispensed? c. How many moles of HCl are present in...
7. You are given a solution of unknown concentration of HCI. (8 Points) You are asked to determine its concentration by titration. You made up a 0.25 moles/Liter solution of NaOH. You filled the burette with NaOH up to the mark. You measured 10 mL of the HCl solution into an Ehrlenmeyer flask and added 1 drop of the phenol- phthalein indicator You titrated the HCl in the Ehrlenmeyer flask with NaOH from the burette 3 times. Your observations were:...
The titration of 29.40 mL of HCl solution of unknown concentration requires 12.82 mL of a 0.150 M NaOH solution to reach the equivalence point. What is the concentration of the unknown HCl solution in M?