For the reaction: C 2H 4Br 2 + 3 KI → C 2H 4 + 2 KBr + KI 3, When the rate of reaction is 2.0 × 10 -5, what is the rate of disappearance of C 2H 4Br 2?   a 0.67 × 10-5   b 2.0 × 10-5   c 1.0 × 10-5   d 4.0 × 10-5   e 6.0 × 10-5

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