Question

Need help on the 2 highlighted parts towards bottom and help check the "calculated data"

Data Collection a) Making working NaOH stock (15 points) Original stock concentration of NaOH (aq): 10 M Volume of stock used (ml): 20 mL Use M1V1 = M2V2 to calculate concentration of Working NaOH solution (M): 2 b) Raw Data (20 points) Trial 1 Trial 2 20.000 mL 20.000 mL 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) 23.091 mL 22.047ml 26.091 mL 24.797 mL c) Calculated Data (40 points) From this information you have collected and calculated, calculate the molarity of the HCl solution. Report all values in this table below. To receive credit for this section, you will need to 1) take a picture of your work showing the dimensional analysis/stoichiometry in order to calculate the Molarity of HCl and insert here/below or 2) scan the work and upload as a separate file. Trial 1 Volume of NaOH added (mL) Mol of NaOH added (mol) Mol of HCl (mol) Molarity of HCl solution (M) Average molarity of HCl solution 3 mL .0025 mol .0025 mol Trial 2 2.75 mL 25 mol .0025 mol