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Rate of Reaction

Reaction: Cl...

Question

Reaction:
$C l_{2} (g) + 2 I^{-} (a q) \to I_{2} (g) + 2 C l^{-} (a q)$
Initial concentration of $I^{- 1} = 0.30$ mole $l i t r e^{- 1}$
Final concentration of $I^{- 1} = 0.25$ mole $l i t r e^{- 1}$ after $1$ minutes. Determine Rate of disappearance of $I^{- 1}$ . Rate of formation of $I_{2}$ .

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Solution

${C l}_{2} (g) + 2 I^{-} (a q) \to I_{2} (g) + 2 {C l}^{-} (a q)$
$∴$ Rate of disappearance of $I^{(-)} = \frac{f i n a l {c o n c}^{n} - I n i t i a l {c o n c}^{n}}{1} \times 2$
$= \frac{0.25 - 0.30}{1} \times 2 = - 0.1$ $m o l {l i t}^{- 1} {m i n}^{- 1}$
$∴$ rate of formation of $I_{2} = \frac{f i n a l {c o n c}^{n} - I n i t i a l {c o n c}^{n}}{1 m i n} \times \frac{1}{2} = \frac{0.05}{2} = 0.025 m o l$ ${l i t}^{- 1} {m i n}^{- 1}$

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