5. Chemical reaction and equation

Match the followings.
 
Answer variants:
Composition
Reduction reaction
\(SO_3\)
\(KCl\) + \(O_2\)
  
Column I
Column II
\(Sn^4{^+}\) + \(2e^-\) → \(Sn^2{^+}\)
\(KClO_3\) \(\xrightarrow[]{Heat}\)
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