Manganometry: Iron Analysis Quest

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Test your iron manganometry knowledge.

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David Kubac

Malta

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Froggy Jumps Manganometry: Iron Analysis QuestOnline version Test your iron manganometry knowledge. by David Kubac 1 What titrant is used in manganometry for iron analysis? a Potassium permanganate (KMnO4) b Potassium dichromate (K2Cr2O7) c Sodium thiosulfate (Na2S2O3) 2 In acidic solution, MnO4- oxidizes which iron species? a Fe metal to Fe2+ b Fe2+ to Fe3+ c Fe3+ to Fe2+ 3 Balanced reaction: MnO4- oxidizes Fe2+ to Fe3+. Which species is reduced? a Fe2+ to Fe3+ b MnO4- to Mn2+ c Fe3+ to Fe2+ 4 What indicates the endpoint in manganometry with iron? a Persistent pink color b Colorless solution c Blue-green color 5 Which condition is essential for the manganometry reaction? a Acidic medium b Basic medium c Neutral water only 6 Which iron species is titrated in manganometry? a Fe3+ b Fe2+ c Fe metal 7 Key equation (part): MnO4- + 5 Fe2+ + 8 H+ → ? a Mn2+ + 5 Fe3+ + 4 H2O b MnO2 + 5 Fe3+ + 8 H2O c Mn2+ + 5 Fe3+ + 2 H2O 8 What can interfere with manganometry accuracy? a Excess MnO4- only b Low sample temperature only c Presence of oxidizable species other than Fe2+ 9 Why is an acidic medium important in this titration? a To prevent MnO4- reduction to MnO2 and ensure proper reaction b To dissolve Fe2+ c To color the solution blue 10 What is the main purpose of manganometry for iron analysis? a Measure Fe3+ precipitation b Calculate total iron by mass c Determine the Fe2+ concentration in solution

Froggy Jumps

Manganometry: Iron Analysis QuestOnline version

Test your iron manganometry knowledge.

by David Kubac

What titrant is used in manganometry for iron analysis?

Potassium permanganate (KMnO4)

Potassium dichromate (K2Cr2O7)

Sodium thiosulfate (Na2S2O3)

In acidic solution, MnO4- oxidizes which iron species?

Fe metal to Fe2+

Fe2+ to Fe3+

Fe3+ to Fe2+

Balanced reaction: MnO4- oxidizes Fe2+ to Fe3+. Which species is reduced?

Fe2+ to Fe3+

MnO4- to Mn2+

Fe3+ to Fe2+

What indicates the endpoint in manganometry with iron?

Persistent pink color

Colorless solution

Blue-green color

Which condition is essential for the manganometry reaction?

Acidic medium

Basic medium

Neutral water only

Which iron species is titrated in manganometry?

Fe3+

Fe2+

Fe metal

Key equation (part): MnO4- + 5 Fe2+ + 8 H+ → ?

Mn2+ + 5 Fe3+ + 4 H2O

MnO2 + 5 Fe3+ + 8 H2O

Mn2+ + 5 Fe3+ + 2 H2O

What can interfere with manganometry accuracy?

Excess MnO4- only

Low sample temperature only

Presence of oxidizable species other than Fe2+

Why is an acidic medium important in this titration?

To prevent MnO4- reduction to MnO2 and ensure proper reaction

To dissolve Fe2+

To color the solution blue

What is the main purpose of manganometry for iron analysis?

Measure Fe3+ precipitation

Calculate total iron by mass

Determine the Fe2+ concentration in solution

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Manganometry: Iron Analysis Quest

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Manganometry: Iron Analysis QuestOnline version

by David Kubac

What titrant is used in manganometry for iron analysis?

In acidic solution, MnO4- oxidizes which iron species?

Balanced reaction: MnO4- oxidizes Fe2+ to Fe3+. Which species is reduced?

What indicates the endpoint in manganometry with iron?

Which condition is essential for the manganometry reaction?

Which iron species is titrated in manganometry?

Key equation (part): MnO4- + 5 Fe2+ + 8 H+ → ?

What can interfere with manganometry accuracy?

Why is an acidic medium important in this titration?

What is the main purpose of manganometry for iron analysis?

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