Module 5: Electrochemistry And Transition Metals

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

Redox equations What is a redox equation made up of

Back (Answer)

Oxidisation half reaction and reduction half reaction

Front (Question)

Redox equations How do you make a full redox equation

Back (Answer)

Combining a oxidation half equation with a reduction half equation

Front (Question)

Redox equations How do you combine two half equations

Back (Answer)

Balancing electrons on each equation

Front (Question)

Redox equations What are you allowed to add to balance a half equation

Back (Answer)

Electrons H+ ions and water

Front (Question)

Redox equations How can you check a redox equation is balanced

Back (Answer)

Balanced charges

Front (Question)

Redox equations Order to balance a half equation

Back (Answer)

Add electrons to balance oxidation sate of main element Add water to balance oxygens Add H+ ions to balance water Check charges n balance

Front (Question)

Redox titrations What are used and why in redox titrations

Back (Answer)

Transition elements change oxidation rate readily sp useful as oxidising and reducing agents so receive or give out electrons and change colour so easy to spot when reaction finished

Front (Question)

Redox titrations Formula for manganate (VII) ions

Back (Answer)

MnO4^-

Front (Question)

Redox titrations What oxidation state does manganese’s have in manganate (VII)

Back (Answer)

#10

Front (Question)

Redox titrations What can manganate (VII) ions be reduced to

Back (Answer)

Mn^2+

#11

Front (Question)

Redox titrations What is the ration of Managanese (VII) to Fe2+

Back (Answer)

1:5

#12

Front (Question)

Redox titrations What is the ration of manganese (VII) to H2O2

Back (Answer)

2:5

#13

Front (Question)

Redox titrations What is the colour change with manganese (VII)

Back (Answer)

Purple to colourless

#14

Front (Question)

Redox titrations What type of agent is manganese (VII)

Back (Answer)

Oxidising

#15

Front (Question)

Redox titrations What kind of agent is dichromate

Back (Answer)

Oxidising

#16

Front (Question)

Redox titrations What is formula for dischromate (VI)

Back (Answer)

Cr2O7^2-

#17

Front (Question)

Redox titrations What oxidation state does chromium have in dichromate

Back (Answer)

#18

Front (Question)

Redox titrations What can dichromate be reduced to

Back (Answer)

Cr3+

#19

Front (Question)

Redox titrations Ratio of dichromate to Zn

Back (Answer)

1:3

#20

Front (Question)

Redox titrations Colour change involving dichromate

Back (Answer)

Orange to green

#21

Front (Question)

Redox titrations What is important in redox titrations and why

Back (Answer)

May need acid in excess to ensure H+ ions

#22

Front (Question)

Redox titrations Titration procedures

Back (Answer)

First you measure out a quantity of the reducing agent, e.g. aqueous Fez+ ions, using a pipette, and put it in a conical flask. You then add some dilute sulfuric acid to the flask — this is an excess, so you don’t have to be too exact.. Now you gradually add the aqueous MnO, (the oxidising agent) to the reducing agent using a burette, swirling the conical flask as you do so. 4) You stop when the mixture in the flask just becomes tainted with the colour of the MnO,- (the end point) and record the volume of the oxidising agent added. 5) Run a few titrations and then calculate the mean volume of MnO,.

#23

Front (Question)

Redox titrations What can make the colour easier to spot

Back (Answer)

On white surface

#24

Front (Question)

Electrochemistry What can electrochemical cels be made from

Back (Answer)

Two different metals dipped in salt solutions of their own ions and connected by a wire