Redox= quiz part 1 with answers

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

what is the name of this reaction?

Change of iron(II) ion to iron (III) ion

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

Write out rough equation first and put arrows to show oxidation

and reduction process

Fe 2+ +MnO4- Fe3+ + Mn2+

oxidation

reduction

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

what is oxidised

and why?

Iron(II) ion because oxidation Number of iron increase from +2 to +3

Fe 2+ +MnO4- Fe3+ + Mn2+

oxidation

reduction

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

what is reduced and

why?

Manganate (VII) ion because oxidation Number of manganese Reduced from +7 to +2

Fe 2+ +MnO4- Fe3+ + Mn2+

oxidation

reduction

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

what is oxidising

agent and why?

Manganate (VII) ion because it oxidise iron(II) to iron(III)

Fe 2+ +MnO4- Fe3+ + Mn2+

oxidation

reduction

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

what is reducing agent

and why?

Iron(II) ion because it reduce manganate (VII) ions to manganese (II) ions

Fe 2+ +MnO4- Fe3+ + Mn2+

oxidation

reduction

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

Write half equation for oxidation reaction

Fe 2+ Fe 3+ + e

Fe 2+ +MnO4- Fe3+ + Mn2+

oxidation

reduction

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

Write half equation for

reduction reaction

MnO4 - + 8H+ + 5e Mn 2+ + 4H2O

Fe 2+ +MnO4- Fe3+ + Mn2+

oxidation

reduction

I ron(I I ) chloride reacts with Potassium manganate (VII ) soluti on)

Write overall equation

5Fe 2+ + MnO4 - + 8H+ 5Fe 3+ + Mn 2+ + 4H2O

MnO4 - + 8H+ + 5e Mn 2+ + 4H2O Fe 2+ Fe 3+ + e5 5 5

what is the name of this reaction?

Change of iron(III) ion to iron (II) ion

I ron(I I I ) chloride reacts with z inc

I ron(I I I ) chloride reacts with z inc

Write out rough equation first and put arrows to show oxidation

and reduction process

Fe 3+ +Zn Fe2+ + Zn2+

reduction

oxidation

I ron(I I I ) chloride reacts with z inc

what is oxidised and

why?

Zinc because oxidation Number of zinc increase from 0 to +2

Fe 3+ +Zn Fe2+ + Zn2+

reduction

oxidation

what is reduced

and why?

Iron(III) ion because oxidation Number of iron Reduced from +3 to +2

I ron(I I I ) chloride reacts z inc

Fe 3+ +Zn Fe2+ + Zn2+

reduction

oxidation

what is oxidising agent and why?

Iron(III) ion because it oxidise zinc to zinc ion

I ron(I I I ) chloride reacts z inc

Fe 3+ +Zn Fe2+ + Zn2+

reduction

oxidation

what is reducing agent and

why?

Zinc because it reduce iron(III) ions to iron (II) ions

I ron(I I I ) chloride reacts z inc

Fe 3+ +Zn Fe2+ + Zn2+

reduction

oxidation

Write half equation for oxidation reaction

Zn Zn 2+ + 2e

I ron(I I I ) chloride reacts z inc

Fe 3+ +Zn Fe2+ + Zn2+

reduction

oxidation

Write half equation for reduction reaction

Fe3+ + e Fe 2+

I ron(I I I ) chloride reacts z inc

Fe 3+ +Zn Fe2+ + Zn2+

reduction

oxidation

I ron(I I I ) chloride reacts z inc

Zn + 2Fe 3+ 2Fe 2+ + Zn 2+

Write overall equation

Fe3+ + e Fe 2+

Zn Zn 2+ + 2e

22 2

what is the name of this reaction?

Displacement of metal

Zinc reacts with copper(I I ) sulphate soluti on

Zn +Cu2+ Zn2+ + Cu

Zinc reacts with copper(I I ) sulphate soluti on

Write out rough equation first and put arrows to show oxidation

and reduction process

oxidation

reduction

what is oxidised and why?

Zinc because oxidation Number of zinc increase from 0 to +2

Zinc reacts with copper(I I ) sulphate soluti on

Zn +Cu2+ Zn2+ + Cu

oxidation

reduction

what is reduced and why?

Copper (II) ion because oxidation Number of copperReduced from +2 to 0

Zinc reacts with copper(I I ) sulphate soluti on

Zn +Cu2+ Zn2+ + Cu

oxidation

reduction

what is oxidising agent and why?

Copper (II) ion because it oxidise zinc to zinc ion

Zinc reacts with copper(I I ) sulphate soluti on

Zn +Cu2+ Zn2+ + Cu

oxidation

reduction

what is reducing agent and why?

Zinc because it reduce copper (II) ions to copper

Zinc reacts with copper(I I ) sulphate soluti on

Zn +Cu2+ Zn2+ + Cu

oxidation

reduction

Write half equation for oxidation reaction

Zn Zn 2+ + 2e

Zinc reacts with copper(I I ) sulphate soluti on

Zn +Cu2+ Zn2+ + Cu

oxidation

reduction

Write half equation for reduction reaction

Cu2+ + 2e Cu

Zinc reacts with copper(I I ) sulphate soluti on

Zn +Cu2+ Zn2+ + Cu

oxidation

reduction

Zinc reacts with copper(I I ) sulphate soluti on

Zn + Cu 2+ Cu + Zn 2+

Write overall equation

Cu2+ + 2e Cu

Zn Zn 2+ + 2e