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Reaction Kinetics /
Quiz 4

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NCAT - Practice Test - Chemistry - Reaction Kinetics Quiz

Attempt 10 MCQs on NCAT - Practice Test - Chemistry - Reaction Kinetics | Quiz 4

31. What is the integrated rate law for a first-order reaction?

ln[A]_t = -kt + ln[A]_0
1/[A]_t = kt + 1/[A]_0
[A]_t = -kt + [A]_0
[A]_t = [A]_0 e^{-kt}

32. What is the half-life formula for a first-order reaction?

t_{1/2} = ln2/k
t_{1/2} = 1/(k[A]_0)
t_{1/2} = [A]_0/(2k)
t_{1/2} = k/ln2

33. What is the integrated rate law for a second-order reaction?

1/[A]_t = kt + 1/[A]_0
ln[A]_t = -kt + ln[A]_0
[A]_t = [A]_0 - kt
[A]_t = [A]_0 e^{-kt}

34. What is the half-life formula for a second-order reaction?

t_{1/2} = 1/(k[A]_0)
t_{1/2} = ln2/k
t_{1/2} = [A]_0/(2k)
t_{1/2} = k/[A]_0

35. What is the integrated rate law for zero-order reaction?

[A]_t = -kt + [A]_0
ln[A]_t = -kt + ln[A]_0
1/[A]_t = kt + 1/[A]_0
[A]_t = [A]_0 e^{-kt}

36. What is the half-life for a zero-order reaction?

[A]_0/(2k)
ln2/k
1/(k[A]_0)
2k/[A]_0

37. How is overall order calculated?

Sum of exponents
Product of exponents
Average of exponents
Difference of exponents

38. What is the overall order of H2 + I2 -> 2HI if rate = k[H2][I2]?

Second order overall
First order overall
Zero order overall
Third order overall

39. What term describes the number of species involved in an elementary reaction step?

Molecularity
Order
Rate constant
Activation energy

40. What are the possible molecularities?

Unimolecular, bimolecular, termolecular
First, second, third order
Single, double, triple
Monomeric, dimeric, trimeric

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