A 25.00 mL sample of 0.320 M LİÖH is titrated with 0.750 M HNO3 at 25 °C. Calculate the initial pH before any titrant is added. pH = Calculate the pH of the solution after 5.00 mL of the titrant is added. pH =

I know the anser is 7.4, but I don't where I get x 10-9  from when I calculate the log. Where does it come from.

An aqueous solution is 3.50 % by mass hydrochloric acid, HCl, and has a density of 1.02 g/mL. The mole fraction of hydrochloric acid in the solution is ____.

It takes 175ml of 0.75 M H2SO4   to completely neutralize 285 ml of NaOH.  What is the concentration of the NaOH solution?

How many grams of solid NaOH are required to prepare 250 ml of a 0.05 M solution?

Make a list of the five most critical qualities of an effective extraction buffer. Please provide a brief description of each.

Calculate the pH of the resulting solution if 23.0 mL of 0.230 M HCl(aq) is added to 33.0 mL of 0.230 M NaOH(aq). pH = Calculate the pH of the resulting solution if 23.0 mL of 0.230 M HCl(aq) is added to 13.0 mL of 0.330 M NaOH(aq). pH=

what is the is the dilution factor when  you add 2 mL ssample of 8 mL diluent?

Report how to make a 250.mL of 50µM sodium acetate and 0.01u EDTA using solid sodium acetate and 10µM EDTA.

You want to use a serial dilution to make a 1/50 dilution. The first dilution you make is a 1/5 dilution with a total volume of 1 ml. To make that dilution you would add of your stock of your solution and of your solvent. Then you make a 1/10 dilution and add of your solvent. first dilution and O 0.1 ml, 0.9 ml, 0.2 ml, 0.8 ml O 0.3 ml, 0.7 ml, 0.1 ml, 0.9 ml O 0.2 ml, 0.8 ml, 0.1 ml, 0.9 ml 0.2 ml, 0.8 ml, 0.3 ml, 0.7 ml O None of these answer choices