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For the eleme...

Question

For the elementary reaction 2A $\to$ C ,the concentration of A after 30 minutes was found to be 0.01 mole/lit. If the rate constant of the reaction is $2.5 \times 10^{- 2}$ lit mole $^{- 1}$ sec $^{- 1}$ . The rate of the reaction at 30 minutes is:

2.5 \times 10^{- 4}

lit mole

^{- 1}

sec

^{- 1}

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2.5 \times 10^{- 6}

lit mole

^{- 1}

sec

^{- 1}

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2.5 \times 10^{- 2}

lit mole

^{- 1}

sec

^{- 1}

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2.5 \times 10^{- 8}

lit mole

^{- 1}

sec

^{- 1}

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Solution

The correct option is B $2.5 \times 10^{- 6}$ lit mole $^{- 1}$ sec $^{- 1}$
Rate of Reaction = Rate Constant x ${[A]}^{2}$

$= 2.5 \times 10^{- 2} \times {[0.01]}^{2}$

$= 2.5 \times 10^{- 2} \times 10^{- 4}$

$= 2.5 \times 10^{- 6}$ lit mol $^{- 1}$ sec $^{- 1}$

Hence, the correct option is $B$

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Similar questions

Q. For the elementary reaction

2 A \to C

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Q. The specific rate of a reaction is

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2.60 \times 10^{- 5} l i t m o l^{- 1} s e c^{- 1}

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For the elementary reaction 2A → C ,the concentration of A after 30 minutes was found to be 0.01 mole/lit. If the rate constant of the reaction is 2.5×10−2 lit mole−1 sec−1. The rate of the reaction at 30 minutes is:

The correct option is B 2.5×10−6 lit mole−1 sec−1Rate of Reaction = Rate Constant x [A]2 =2.5×10−2×[0.01]2=2.5×10−2×10−4=2.5×10−6 lit mol −1 sec−1Hence, the correct option is B

For the elementary reaction 2A $\to$ C ,the concentration of A after 30 minutes was found to be 0.01 mole/lit. If the rate constant of the reaction is $2.5 \times 10^{- 2}$ lit mole $^{- 1}$ sec $^{- 1}$ . The rate of the reaction at 30 minutes is:

The correct option is B $2.5 \times 10^{- 6}$ lit mole $^{- 1}$ sec $^{- 1}$
Rate of Reaction = Rate Constant x ${[A]}^{2}$

$= 2.5 \times 10^{- 2} \times {[0.01]}^{2}$

$= 2.5 \times 10^{- 2} \times 10^{- 4}$

$= 2.5 \times 10^{- 6}$ lit mol $^{- 1}$ sec $^{- 1}$

Hence, the correct option is $B$