Chemistry, 12.12.2020 22:20 heidiheffron574
Student A rinsed three (3) Erlenmeyer flasks with distilled water and, then, to each was added a 25.00-mL aliquot of dilute hydrochloric acid, HCl(aq) . The solution was titrated to a bromothymol blue end point with standardized aqueous sodium hydroxide, NaOH9aq). Student B, his lab partner, challenged his titration results because Student A failed to wash the Erlenmeyer flask with the HCl solution of unknown concentration.
A) Student A is correct because the moles of analyte is related to the HCl aliquot’s volume.
B) Student A made an error since the additional wáter alters the titration’s end point.
C) Student B is correct because moles of analyte are altered by the diluting wáter drops.
D) Student B is not correct because the bromothymol blue indicator is added to the buret.
Answers: 1
Chemistry, 22.06.2019 02:10
Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %
Answers: 2
Chemistry, 22.06.2019 14:00
8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
Answers: 3
Student A rinsed three (3) Erlenmeyer flasks with distilled water and, then, to each was added a 25....
Mathematics, 30.07.2019 07:40
English, 30.07.2019 07:40
English, 30.07.2019 07:40
Mathematics, 30.07.2019 07:40
Social Studies, 30.07.2019 07:40
Biology, 30.07.2019 07:40
French, 30.07.2019 07:40
Biology, 30.07.2019 07:40
Social Studies, 30.07.2019 07:40
Physics, 30.07.2019 07:40