For the reaction: C₂H₄Br₂ + 3 KI → C₂H₄+ 2 KBr + KI₃,when the rate of disappearance of C₂H₄Br₂ is 2.0 × 10^-5 M/s,what is the rate of disappearance of KI?

Question

Quizplus · Accepted Answer

The rate of disappearance of KI is three times the rate of disappearance of the given compound because the stoichiometry of the reaction shows that 3 moles of KI react for every 1 mole of the compound. Therefore, the rate for KI is $3 \times 2.0 \times 10^{-5} = 6.0 \times 10^{-5} \, \text{M/s}$.

For the Reaction: C2H4Br2 + 3 KI → C2H4

For the Reaction: C₂H₄Br₂ + 3 KI → C₂H₄