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Which of the following is the fastest re...

Which of the following is the fastest reaction

A

`C+(1)/(2)O_(2)overset(250^@C)(rarr)CO`

B

`C+(1)/(2)O_(2)overset(500^@C)rarrCO`

C

`C+(1)/(2)O_(2)overset(750^@C)rarrCO`

D

`C+(1)/(2)O_(2)overset(1000^@C)rarrCO`

Text Solution

Verified by Experts

The correct Answer is:
D
Combination is an exothermic process, which is expected to be favoured by low temperature, but it is not true. Combination include burning of partilces which takes place at higher temperature. Thus at high temperature due to combustion of more particles, the reaction proceeds at higher rate.
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A2Z-CHEMICAL KINETICS-Section D - Chapter End Test
  1. Which of the following is the fastest reaction

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  2. The Arrhenius equation for trans ispmerisation of 2-butene and 2-buten...

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  3. Thermal decomposition of a compound is of first order. If 50% of a sam...

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  4. The decompoistion of Cl(2)O(7) at 400 K in gas phase to Cl(2) and O(2)...

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  5. A substance having a half-life period of 30 minutes decomposes accordi...

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  6. In a Arrhenius equation for a certain reaction, the values of A and E(...

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  7. A first order reaction is 50% complete in 30 minutes at 27^(@)C and in...

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  8. 75% of a first-order reaction was completed in 32 minutes. When was 50...

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  9. What will be the fraction of .(m)^(n)X (t(1//2) = 25 "min") laft after...

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  10. What is the activation energy for the decomposition of N(2)O(5) as N...

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  11. 50% of the amount of a radioactive substance decomposes in 5 years. Th...

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  12. In a first order reaction, 75% of the reactants disappeared in 1.386 h...

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  13. For a first order reaction, the ratio of time for the completion of 99...

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  14. For the first order reaction A(g) rarr 2B(g) + C(g), the initial press...

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  15. The rate law for the reaction RCL + NaOH(aq) rarr ROH + NaCl is give...

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  16. For a given reaction of first order, it takes 20 minutes for the conce...

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  17. The unit of rate constant of a reaction having order 1.5 would be

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  18. The half-life period of a radioactive element is 140 days. After 560 d...

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  19. In a reaction, the concentration of reactant is increased two times an...

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  20. In a first order reaction, the concentration of the reactant decreases...

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  21. The half-life of 2 sample are 0.1 and 0.4 seconds. Their respctive con...

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