Chemistry 0620 · IGCSE · Redox

Redox — practice question

The equations for two reactions are displayed below. equation 1: $\text{C} + \text{CO}_2 \rightarrow x\,\text{CO}$ equation 2: $2\text{C}_2\text{H}_6 + 7\text{O}_2 \rightarrow 4\text{CO}_2 + y\,\text{H}_2\text{O}$ Which row gives the value of $x$, the value of $y$ and the equations that are redox reactions?

  • Avalue of $x$: $1$; value of $y$: $3$; redox reactions: equation 1 only
  • Bvalue of $x$: $2$; value of $y$: $3$; redox reactions: equations 1 and 2
  • Cvalue of $x$: $2$; value of $y$: $6$; redox reactions: equation 1 only
  • Dvalue of $x$: $2$; value of $y$: $6$; redox reactions: equations 1 and 2

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