Question

VOLUMETRIC ANALYSIS REVIEW Reference Data NaoH Concentration: 00314m KHIP Fomu HC&HC4 xI Mlr Mas 20.23g/ml Balanced Equation for Reaction :EHC8H40ч t lUaHiluahC8Htdar) t Mass of KHP used:00 KHP Molar Mass Preparation Data H2OC) 1001お - Moles of KHP: show work below y.13xld'3noi volume ofKHP Solution:-100mL no\ Nominal KHP Concentration :. show work below 0.0043 Titration Data Trial 1 Trial 2 Trial3 units? volume of KHP solution! 16.6 ml 100 mL | 16:0mL1 mL FINAL Buret Reading NITIAL Buret Reading Volume of NaOH added mL MolesfNHad.000500 0.000560mol 0,doo5oon mo Moles of KHP in Sample b,000500moi p.000500pmoi 0, 000500m Concentration of KHP in sample 0 Average Conc. KHP | 00500 1% 0 i on」 %RAD for experiment tip: did you remember to include units for ALL quantities that require them? 71

How do you find the nominal KHP concentration and the empirical KHP concentration? What is the difference between the two?

Answer 1

Values given in the lab sheet are used directly for calculations:

Initial concentration calculated from data given is nominal concentration

I.e. theoretical concentration = 0.00493 × 1000/ 100

= 0.0493 M

Empirical concentration is measured concentration by experiment I.e. 0.05 M

Difference between two is 0.0007 M.