The diagram shows a blast furnace used to extract iron metal from iron ore. Iron ore is added in the charge at the top while hot air is pumped in at the bottom as shown. Molten iron trickles down and is removed at the bottom. Molten impurities that float on the iron are removed at outlet X. (i) Give the name or formula of an ore of iron. Name another substance added in the charge with the iron ore. What name is given to the impurity removed at X? Most of the iron produced is converted to an alloy of iron. (ii) Name this alloy. What other element is always present in this alloy?

Leaving Cert Chemistry OPTION : Metals: The diagram shows a blast furnac

The diagram shows a blast furnace used to extract iron metal from iron ore - Leaving Cert Chemistry - Question B - 2015

Question B

The diagram shows a blast furnace used to extract iron metal from iron ore. Iron ore is added in the charge at the top while hot air is pumped in at the bottom as sh... show full transcript

Worked Solution & Example Answer:The diagram shows a blast furnace used to extract iron metal from iron ore - Leaving Cert Chemistry - Question B - 2015

Step 1

Give the name or formula of an ore of iron.

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Answer

One common ore of iron is hematite, which has the chemical formula $ext{Fe}_2 ext{O}_3$ . Other examples include magnetite ( $ext{Fe}_3 ext{O}_4$ ) and iron oxide.

Step 2

Name another substance added in the charge with the iron ore.

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Answer

Another substance often added in the charge with iron ore is coke (made from coal) or limestone. Coke acts as a fuel and reducing agent, while limestone helps to remove impurities.

Step 3

What name is given to the impurity removed at X?

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Answer

The impurity removed at outlet X is referred to as slag. Slag consists of the molten impurities that float on the molten iron.

Step 4

Name this alloy.

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Answer

The alloy produced from iron is typically known as steel. Other forms include pig iron or cast iron.

Step 5

What other element is always present in this alloy?

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Answer

The element that is always present in steel is carbon. It is usually present in varying amounts to enhance the properties of the alloy. Additionally, silicon may also be present to improve certain characteristics.

The diagram shows a blast furnace used to extract iron metal from iron ore - Leaving Cert Chemistry - Question B - 2015

Worked Solution & Example Answer:The diagram shows a blast furnace used to extract iron metal from iron ore - Leaving Cert Chemistry - Question B - 2015

Give the name or formula of an ore of iron.

Name another substance added in the charge with the iron ore.

What name is given to the impurity removed at X?

Name this alloy.

What other element is always present in this alloy?

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