Chemistry, 03.12.2021 18:20, Yeetadab3376

A different brand of iron tablet was analysed by titration with 0.0093 mol. L-1 potassium dichromate via the reaction listed below; Cr2O72- + 6Fe2+ + 14H+ → 2Cr3+ + 6Fe3+ + 7H2O
In this experiment 4 tablets were crushed and dissolved in 200 cm3 of dilute acid. 25cm3 of this solution was used in the titration. The results of the titrations were as follows;

Titration
Volume dichromate (cm3)
1
33.0
2
32.05
3
32.15
4
32.10

Calculate the concentration of iron used in the titration (4 dp).

Calculate the number of moles in the original iron solution (200 cm3) (5 dp)

Calculate the mass of iron in the solution (grams, 4 dp).

Calculate the mass of iron each tablet (miligrams, 1 dp)

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 00:30, VictoriaRose520

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Answers: 1

continue

Chemistry, 22.06.2019 03:30, krharris

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Answers: 2

continue

Chemistry, 22.06.2019 21:00, cody6187

Rays from the sun are not considered matter true or false

Answers: 2

continue

Chemistry, 22.06.2019 22:30, vhife4901

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.

Answers: 1

continue

Do you know the correct answer?

A different brand of iron tablet was analysed by titration with 0.0093 mol. L-1 potassium dichromate...