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Factors Affecting Rate Constant

Predict which...

Question

Predict which of the following reaction will have appreciable concentration of reactants and products:

a)

b)

c)

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Solution

If the value of K_clies between 10^–3 and 10³, a reaction has appreciable concentration of reactants and products. Thus, the reaction given in (c) will have appreciable concentration of reactants and products.

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Predict which of the following reaction will have appreciable concentration of reactants and products:
a) $C l_{2} (g) \leftrightarrow 2 C l (g); K_{c} = 5 \times 10^{- 39}$
b) $C l_{2} (g) + 2 N O (g) \leftrightarrow 2 N O C l (g); K_{c} = 3.7 \times 10^{8}$
c) $C l_{2} (g) + 2 N O_{2} (g) \leftrightarrow 2 N O_{2} C l (g); K_{c} = 1.8$

Q. Predict which of the following reaction will have appreciable concentration of reactants and products:
a)

{C l}_{2} (g) ⇌ 2 C l (g); K_{c} = 5 \times 10^{- 39}

{C l}_{2} (g) + 2 N O (g) ⇌ 2 N O C l (g); K_{c} = 3.7 \times 10^{8}

{C l}_{2} (g) + 2 {N O}_{2} (g) ⇌ 2 {N O}_{2} C l (g); K_{c} = 1.8

Q. For which of the following reactions the equilibrium mixture will contain an appreciable concentration of both reactants and products.
(a)

C l_{2} (g) ⇌ 2 C l (g); K_{c} = 6.4 \times 10^{39}

C l_{2} (g) + 2 N O (g) ⇌ 2 N O C l (g); K_{c} = 3.7 \times 10^{8}

C l_{2} (g) + 2 N O_{2} (g) ⇌ 2 N O_{2} C l (g); K_{c} = 1.8

Q. For the reaction,

2 N O C l (g) ⇌ 2 N O (g) + C l_{2} (g); K_{c}

427^{\circ}

3 \times 10^{- 6}

K_{p}

Q. For reaction,

2 N O {C l}_{(g)} ⇌ 2 {N O}_{(g)} + {C l}_{2 (g)}; K_{c}

427^{o} C

3 \times 10^{- 6} L {m o l}^{- 1}

K_{p}

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