We had a lab where the standard solution was potassium hdrogenphthalate. In this we added 3 drops of phenolphtalein indicator and then we ran sodium hydroxide into the solution. We did four different flasks and the final readings for these then were 26.00 cm3, 32.00 cm3, 26.10 cm3 and 29.90 cm3. So, my question is how do I calculate the concentration of the hydrogenphthalate solution and the concentration of the sodium solution.
Thanks on beforehand
Chemistry - Amanda, Tuesday, October 16, 2012 at 6:10am
Just saw that I forgat to notice that the amount of potassium hydrogenphtalate was 5.12 grams. Also, it was enough with two readings within ± 0,01 cm3
Chemistry - DrBob222, Tuesday, October 16, 2012 at 8:24pm
mols KHP = grams/molar mass
mols NaOH = mols KHP
M NaOH = mols NaOH/L NaOH