3. (05.05 LC) Consider the reaction 2CuCl2 + 4KI -- 2Cul + 4KCI + I2. If 4 moles of CuCl2 react with 4 moles of KI, what is the limiting reactant? (3 points) A. CuCl2 B. KI C. CuI D. I2
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Ответ:
B. KI
Explanation:
Limiting reactant in a reaction is defined as the reactant that is totally consumed when the reaction is occuring.
For the reaction:
2CuCl₂ + 4KI → 2CuI + 4KCl + I₂
2 moles of CuCl₂ react with 4 moles of KI
If 4 moles of CuCl₂ react, the moles of KI required are:
4 moles CuCl₂ * (4 moles KI / 2 moles CuCl₂) = 8 moles KI are required
As there are just 4 moles of KI, Ki is limiting reactant and right answer is:
B. KIОтвет:
the answer is:
a. increases