Unit 5: Kinetics

Showing 20 of 28 questions

Q1
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Which factor does NOT affect the rate of a chemical reaction?

Q2
MULTIPLE_CHOICEMedium

For a first-order reaction, a plot of which of the following vs. time gives a straight line?

Q3
MULTIPLE_CHOICEHard

A reaction has the rate law: rate = k[A]²[B]. If [A] is doubled and [B] is halved, how does the rate change?

Q4
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For a first-order reaction, a plot of which of the following versus time gives a straight line?

Q5
MULTIPLE_CHOICEHard

The rate law for a reaction is determined to be rate = k[A]²[B]. If the concentration of A is doubled and the concentration of B is halved, the rate will

Q6
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A catalyst increases the rate of a reaction by

Q7
MULTIPLE_CHOICEHard

For a reaction with the rate law rate = k[A][B]², the units of the rate constant k when concentrations are in mol/L and time is in seconds are

Q8
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The half-life of a first-order reaction is 20 minutes. How much of the original reactant remains after 60 minutes?

Q9
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According to collision theory, for a reaction to occur, the colliding molecules must have

Q10
MULTIPLE_CHOICEHard

A proposed mechanism for a reaction is: Step 1: A + B → C (slow) Step 2: C + A → D (fast) The overall reaction and rate law are

Q11
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The Arrhenius equation k = Ae^(-Ea/RT) predicts that increasing temperature will

Q12
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A catalyst increases reaction rate by:

Q13
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For a second-order reaction, a plot of [math] vs. time gives:

Q14
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The rate-determining step of a multi-step reaction is:

Q15
MULTIPLE_CHOICEMedium

The Arrhenius equation shows that reaction rate increases with temperature because:

Q16
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A first-order reaction has a half-life that:

Q17
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An elementary reaction's rate law can be determined directly from:

Q18
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Increasing surface area of a solid reactant increases reaction rate because:

Q19
MULTIPLE_CHOICEMedium

The rate law for a reaction must be determined:

Q20
MULTIPLE_CHOICEHard

What is the rate law for this reaction?

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