Original stock concentration of NaOH (aq): 10.0M Volume of stock used (ml): 100ml
Use MiV1 = M2V2 to calculate concentration of Working NaOH solution (M): 10.0M
HCl(aq) + NaOH(aq) NaCl(aq) + H2O(1)
Trial 1
Trial 2
20.000ml
20.000ml
Volume of Unknown acid
before addition of
phenolphthalein (ml
Volume of Unknown acid after
addition of phenolphthalein
(ml)
Volume of Unknown acid +
volume of NaOH at endpoint
(ml)
21.000ml
21.070ml
I
32.00ml
32.570mL
From this information you have collected and calculated, calculate the molarity of the HCl solution.
Report all values in this table below.
Trial 1
100ml
Trial 2
100ml
Volume of NaOH added (ml)
Mol of NaOH added (mol)
Mol of HCl (mol)
Molarity of HCl solution (M)
Average molarity of HCI solution

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