For chemical reaction A - products- the rate of disappearance of A is given by- -dC A - dt - 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

The correct option is B I, K _ 1 The given chemical reaction is : #160; #160; #160; #160; #160; #160; #160;A → productsNow, Rate ...

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Standard XII

Chemistry

Reaction Quotient

For chemical ...

Question

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)

I, \frac{K_{1}}{K_{2}}

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I, K_{1}

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I I, K_{1} / K_{2}

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I I, \frac{K_{1}}{K_{1} + K_{2}}

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Solution

The correct option is B $I, K_{1}$
The given chemical reaction is :-
A $\to$ products
Now, Rate $= \frac{- d C_{A}}{d t} = \frac{K_{1} C_{A}}{1 + K_{2} C_{A}}$
when $C_{A} << 1 \Rightarrow 1 + K_{2} C_{A} \approx 1$
$\Rightarrow R a t e = \frac{- d C_{A}}{d t} = K_{1} C_{A}$
So, order of reaction $= 1$ , Rate constant $= K_{1}$

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For 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)

The correct option is B I,K1The given chemical reaction is :- A→productsNow, Rate =−dCAdt=K1CA1+K2CAwhen CA<<1⇒1+K2CA≈1⇒Rate=−dCAdt=K1CASo, order of reaction =1, Rate constant =K1

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)