Rate Determining Step (AQA A-Level Chemistry): Quizzes

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Rate Determining Step
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What is the rate-determining step in a multi-step reaction mechanism?

The slowest step

What does the rate-determining step control in a reaction?

The overall reaction rate

Which species appear in the rate equation?

Only those in the RDS

What is a zero order reactant in terms of the RDS?

Not involved in the RDS

What is the first step in determining the rate-determining step?

Analyze the rate equation

For C4H9Br+OH−\text{C}_4\text{H}_9\text{Br} + \text{OH}^- with rate =k[C4H9Br]= k[\text{C}_4\text{H}_9\text{Br}], which is the RDS?

Step involving C4H9Br\text{C}_4\text{H}_9\text{Br} only

In Example 1, why is OH−\text{OH}^- zero order?

It's not in the rate equation

For X+2Y\text{X} + 2\text{Y} with rate =k[X][Y]= k[\text{X}][\text{Y}], what does the 1:1 ratio indicate?

Step 1 is the RDS

How do zero order reactants affect the reaction rate?

They do not affect the rate

What do coefficients in the rate equation show about the RDS?

Which species & how many in RDS

Explore AQA A-Level Chemistry Revision Notes by Topics

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Rate Equations (A Level only)

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Thermodynamics (A Level only)

Rate Equations (A Level only)

Equilibrium constant (Kp) for Homogeneous Systems (A Level only)

Electrode Potentials & Electrochemical Cells (A Level only)

Fundamentals of Acids & Bases (A Level only)

Further Acids & Bases Calculations (A Level only)

Explore AQA A-Level Chemistry Flashcards by Topics

Thermodynamics (A Level only)

Rate Equations (A Level only)

Equilibrium constant (Kp) for Homogeneous Systems (A Level only)

Electrode Potentials & Electrochemical Cells (A Level only)

Fundamentals of Acids & Bases (A Level only)

Further Acids & Bases Calculations (A Level only)

Explore AQA A-Level Chemistry Exam Questions by Topics

Thermodynamics (A Level only)

Rate Equations (A Level only)

Equilibrium constant (Kp) for Homogeneous Systems (A Level only)

Electrode Potentials & Electrochemical Cells (A Level only)

Fundamentals of Acids & Bases (A Level only)

Further Acids & Bases Calculations (A Level only)

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