This reaction is used in the extraction of titanium from its ore.
TiO₂ + 2Cl₂ + 2C → TiCl₄ + 2CO
Which substances is/are the reducing agent(s) in this reaction?
A) C and Cl₂
B) C
C) Cl₂
D) TiO₂
E) none of these substances - it is not a redox reaction
IMAT 2023 · Question 45
Q45 - Oxidation and reduction
Pinned
The correct answer is B) C.
Track oxidation numbers. Ti stays +4 and O stays −2. Chlorine goes from 0 to −1, so it's reduced. Carbon goes from 0 to +2 in CO, so it's oxidised.
The reducing agent is the one that gets oxidised: carbon.
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