The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below- O3g -Cl-g - O2g - ClO- g -i ki- 5-2 - 109 L mol-1 s-1 ClO- g - O- g- O2g - Cl- g -ii kii - 2-6 - 1010 L mol-1 s-1The closest rate constant for the overall reaction O3g - O- g - 2 O2g is-

The correct option is B 1.4× 10^20 L mol^ 1 s^ 1 O_3(g) +Cl^∙(g) → O_2(g) + ClO^∙ (g) #160;....(i) #160; k_i= 5.2 × 10^9 L mol^ 1 s^ 1 ...

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Byju's Answer

Standard XII

Chemistry

Order of Reaction

The reaction ...

Question

The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below:
$O_{3} (g) + C l^{∙} (g) \to O_{2} (g) + C l O^{∙} (g)$ ....(i) $k_{i} = 5.2 \times 10^{9} L m o l^{- 1} s^{- 1}$
$C l O^{∙} (g) + O^{∙} (g) \to O_{2} (g) + C l^{∙} (g)$ ...(ii) $k_{i i} = 2.6 \times 10^{10} L m o l^{- 1} s^{- 1}$

The closest rate constant for the overall reaction $O_{3} (g) + O^{∙} (g) \to 2 O_{2} (g)$ is:

1.4 \times 10^{20} L m o l^{- 1} s^{- 1}

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5.2 \times 10^{9} L m o l^{- 1} s^{- 1}

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3.1 \times 10^{10} L m o l^{- 1} s^{- 1}

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2.6 \times 10^{10} L m o l^{- 1} s^{- 1}

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Solution

The correct option is B $1.4 \times 10^{20} L m o l^{- 1} s^{- 1}$
$O_{3} (g) + C l^{∙} (g) \to O_{2} (g) + C l O^{∙} (g)$ ....(i) $k_{i} = 5.2 \times 10^{9} L m o l^{- 1} s^{- 1}$

$C l O^{∙} (g) + O^{∙} (g) \to O_{2} (g) + C l^{∙} (g)$ ...(ii) $k_{i i} = 2.6 \times 10^{10} L m o l^{- 1} s^{- 1}$

For overall reaction, equation (i)+(ii)

$O_{3} (g) + O^{∙} (g) \to 2 O_{2} (g)$

Then overall reaction constant will be $k_{i} \times k_{i i} .$

So, overall reaction constant is $1.4 \times 10^{20} L m o l^{- 1} s^{- 1} .$

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Similar questions

The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below :
$O_{3}$ (g) + Cl•(g) → $O_{2}$ (g) + ClO•(g) ____ (i)
$k_{i} = 5.2 \times 10^{9} L {m o l}^{- 1} s^{- 1}$
ClO•(g) + O•(g) → $O_{2}$ (g) + Cl•(g) ____ (ii)
$k_{i i} = 2.6 \times 10^{10} L {m o l}^{- 1} s^{- 1}$
The closest rate constant for the overall reaction $O_{3}$ (g) + O•(g) → 2 $O_{2}$ (g) is :

Q. The reaction of

O_{3}

with chlorine atom is given as:

O_{3} (g) + C l (g) ⟶ O_{2} (g) + C l O (g);

k_{1} = 5.2 \times 10^{9} L {m o l}^{- 1} {s e c}^{- 1}

C l O (g) + O (g) ⟶ C l (g) + O_{2} (g);

k_{2} = 2.6 \times 10^{10} L {m o l}^{- 1} {s e c}^{- 1}

Which of these values is closest to the rate constant of the overall reaction?

O_{3} (g) + O (g) ⟶ 2 O_{2} (g)

Q. Ozone depletion takes place as,

2 O_{3} (g) ⟶ 3 O_{2} (g)

:
Step 1:

O_{3} (g) k ⇌ O_{2} (g) + [O] (g)

(fast)
Step 2:

O_{3} (g) + [O] k^{'} - -------- \to 2 O_{2} (g)

(slow)
The order of the overall reaction is:

Q. Listed in the table are forward and reverse rate constants for the reaction

2 N O (g) ⇌ N_{2} (g) + O_{2} (g)

Temperature (K)	$k_{f} (M^{- 1} s^{- 1})$	$k_{r} (M^{- 1} s^{- 1})$
1400	0.29	$1.1 \times 10^{- 6}$
1500	1.3	$1.4 \times 10^{- 5}$

Is the reaction endothermic or exothermic?

For the reaction, $N_{2} O_{5} (g) \to N O_{2} (g) + \frac{1}{2} O_{2} (g)$ The value of rate of disappearance of $N_{2} O_{5}$ is given as $6.25 \times 10^{- 3} m o l L^{- 1} s^{- 1} .$ The rate of formation of $N O_{2}$ and $O_{2}$ is given respectively as:

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