Zinc oxide is converted into zinc. Zinc oxide and coke are fed into a furnace.Hot air is blowninto the bottom of the furnace.Zinc has a melting point of 420 °C and a boiling point of 907 °C. The temperatureinside thefurnace is over 1000 °C.(i) Explain how zinc oxide is converted into zinc. Your answer should include detailsof howthe heat is produced and equations for all the reactions you describe.
Question
Zinc oxide is converted into zinc. Zinc oxide and coke are fed into a furnace.Hot air is blowninto the bottom of the furnace.Zinc has a melting point of 420 °C and a boiling point of 907 °C. The temperatureinside thefurnace is over 1000 °C.(i) Explain how zinc oxide is converted into zinc. Your answer should include detailsof howthe heat is produced and equations for all the reactions you describe.
Solution
Zinc oxide is converted into zinc through a process known as reduction. This process involves the removal of oxygen from zinc oxide. Here's a step-by-step explanation:
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The furnace is fed with zinc oxide and coke. Coke, which is a form of carbon, acts as a reducing agent.
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Hot air is blown into the bottom of the furnace. This air helps to ignite the coke, producing heat and causing the coke to burn. The burning of coke can be represented by the following chemical equation: C + O2 → CO2 This reaction is exothermic, meaning it releases heat.
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The heat produced from the burning of coke raises the temperature inside the furnace to over 1000 °C. This is well above the melting point (420 °C) and boiling point (907 °C) of zinc.
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At this high temperature, the coke reacts with the zinc oxide, reducing it to zinc. This can be represented by the following chemical equation: ZnO + C → Zn + CO In this reaction, the carbon (C) from the coke combines with the oxygen in the zinc oxide (ZnO) to form carbon monoxide (CO), leaving behind pure zinc (Zn).
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The zinc produced is then collected and cooled.
This process is commonly used in the extraction of metals from their ores.
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A furnace takes 10 minutes to heat up to reach 1000 °C.Pure zinc is placed in the furnace.After 6 minutes will the pure zinc be solid or a molten liquid?Solid because at 6 minutes the temperature in the furnace is less than the melting point of zinc.Molten liquid because at 6 minutes the temperature in the furnace is greater than the melting point of zinc.Molten liquid because at 6 minutes the temperature in the furnace is less than the melting point of zinc.Solid because at 6 minutes the temperature in the furnace is greater than the melting point of zinc.I DON'T KNOWSUBMIT ANSWER
On heating ZnCO3 gives ?Zn + CO2ZnO + CO2Zn + CO2 + O2Zn + CO + O2
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