Prelaboratory Assignment:
A 3.0473 g portion of a solid sample which contained copper was dissolved in nitric acid
and diluted to 250.0 mL with distilled water. A 25.00 mL portion of the solution was
diluted with 100 mL of water and electrolyzed at a constant current of 2 mA. After the
electrolysis the mass of the cathode was 10.2485 g. The copper plate was removed
from the electrode by dissolution in nitric acid and the clean electrode had a mass of
10.1005 g. Calculate the percentage of copper in the solid sample.
Answers: 1
Chemistry, 21.06.2019 21:30, cicimarie2018
Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.
Answers: 1
Chemistry, 22.06.2019 23:30, sanociahnoel
The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point
Answers: 1
Prelaboratory Assignment:
A 3.0473 g portion of a solid sample which contained copper was dissolve...
Mathematics, 12.06.2021 04:30
Mathematics, 12.06.2021 04:30
Mathematics, 12.06.2021 04:30