For a chemical reaction A- products- the rate of disappearance of A is given by- -dCAdt - K1CA1-K2CA at low CA the reaction is of the -order with rate constant- Assume K1- K2 are lesser than 1

dC_Adt K_1C_A1+K_2C_A At very low C_A K_2C_A lt; lt; 1 ∴ #160; K_1C_A1+K_2C_A #160; ≈ K_1C_A ∴ reaction is first order with ...

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Standard XII

Chemistry

Order of Reaction

For a chemica...

Question

For a chemical reaction $A \to$ products, the rate of disappearance of $A$ is given by:
$\frac{- d C_{A}}{d t} = \frac{K_{1} C_{A}}{1 + K_{2} C_{A}}$ at low $C_{A}$ the reaction is of the .......order with rate constant. (Assume $K_{1}, K_{2}$ are lesser than 1)

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Solution

$\frac{- d C_{A}}{d t} - \frac{K_{1} C_{A}}{1 + K_{2} C_{A}}$
At very low $C_{A}$
$K_{2} C_{A} << 1$
$∴ \frac{K_{1} C_{A}}{1 + K_{2} C_{A}} \approx K_{1} C_{A}$
$∴$ reaction is first order with rate const $K_{1}$

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Similar questions

For chemical reaction A

\to

products, the rate of disappearance of A is given by:

\frac{{- d C}_{A}}{d t} = \frac{K_{1} C_{A}}{1 + K_{2} C_{A}}

. At low

C_{A}

the reaction is of the ____ order with rate constant ______. (Assume

K_{1} . K_{2}

are lesser than 1)

For the elementary reaction 2A $⇌$ B,The forward and backward rate constants are $k_{1}$ and $k_{2}$ respectively. Then the rate of disappearance of A is equal to:

Q. The rate of a certain reaction depends on concentration according to equation:

\frac{- d [A]}{d t} = \frac{k_{1} [A]}{1 + k_{2} [A]}

What will be the order of reaction when the concentration is very low?

For the elementary reaction 2A $⇌$ B,The forward and backward rate constants are $k_{1}$ and $k_{2}$ respectively. Then the rate of disappearance of A is equal to:

Q. For the given reaction,

A_{1} K_{2} B

Where

K_{1}

is zero order rate constant and

K_{2}

is first rate constant. The concentration of

B

at any time can be given by the experssion:

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For a chemical reaction A→ products, the rate of disappearance of A is given by:−dCAdt=K1CA1+K2CA at low CA the reaction is of the .......order with rate constant. (Assume K1,K2 are lesser than 1)

−dCAdt−K1CA1+K2CAAt very low CAK2CA<<1∴K1CA1+K2CA≈K1CA∴ reaction is first order with rate const K1

For a chemical reaction $A \to$ products, the rate of disappearance of $A$ is given by:
$\frac{- d C_{A}}{d t} = \frac{K_{1} C_{A}}{1 + K_{2} C_{A}}$ at low $C_{A}$ the reaction is of the .......order with rate constant. (Assume $K_{1}, K_{2}$ are lesser than 1)

$\frac{- d C_{A}}{d t} - \frac{K_{1} C_{A}}{1 + K_{2} C_{A}}$
At very low $C_{A}$
$K_{2} C_{A} << 1$
$∴ \frac{K_{1} C_{A}}{1 + K_{2} C_{A}} \approx K_{1} C_{A}$
$∴$ reaction is first order with rate const $K_{1}$