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Reducing agents are ____1____ in a reaction.
Reducing agents cause the other substance in the reaction to ____2____ oxygen.
Which words complete gaps 1 and 2?
Magnesium reacts with copper oxide. The equation for this reaction is shown.
Mg+CuO→MgO+Cu
Which substance is acting as an oxidising agent in this reaction?
Iron is extracted from its oxide using carbon monoxide. The equation is shown.
Fe₂O₃+3CO→2Fe+3CO₂
Which row identifies the reducing agent and explains how it acts as a reducing agent?
Reducing agent | How it reacts | |
A | Fe₂O₃ | receives oxygen |
B | Fe₂O₃ | donates oxygen |
C | CO | receives oxygen |
D | CO | donates oxygen |
Iron can be obtained from iron(III) oxide by heating with aluminium powder. The equation is shown.
2Al+Fe₂O₃→Al₂O₃+2Fe
What is the oxidising agent?
The equation for the reaction of zinc oxide with carbon monoxide is shown.
ZnO+CO→Zn+CO₂
Which statement explains the role of carbon monoxide in this reaction?
Iron oxide reacts with aluminium.
Fe₂O₃+2Al→2Fe+Al₂O₃
Which row identifies the oxidising agent and reducing agent in the reaction?
2 NH₃ + 3CuO → N₂ + 3Cu + 3H₂O
The equation above represents the reaction between ammonia and copper(II) oxide. Which of the following is true about the reaction?