the density of vinegar was determined using a pycnometer. the empty pycnometer weighed 01495g at...

the density of vinegar was determined using a pycnometer. the empty pycnometer weighed 01495g at 23 degree celcuis. filled with vinegar, it weighed 0.899g. filled with water, it weighed 0.896g. the density of water at 23 degree celcuis is 0.9975g/cm3. A 0.825cm3 sample of NaOH was standardized using 0.815cm3 of 0.0969M potassium hydrogen phthalate (KHP). The standardized solution was then used to titrate 0.250cm3 of the vinegar. the volume of NaOH needed was 2.205cm3. the stoichiometry of the reaction is: C2H402(aq) + Na.OH(aq) = Na (aq) + C2H302 (a.q) + H20(1).
1 = Calculate the density of the vinegar. 2 = find the concentration of acetic acid in the vinegar in moles per litre, grams per litre and percent by weight?

In University of Calabar
1 Answers Available
Asked by Princeoffiong on 24th March, 2019