Chemical Kinetics Quiz

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Chemical Kinetics Quiz


Chemical Kinetics QuizVersión en línea Test your kinetics knowledge. por zubia nadeem 1 What describes the average rate of a reaction over a time interval? a Half-life b Specific rate constant c Instantaneous rate d Average rate 2 What is the rate at a precise instant called? a Instantaneous rate b Average rate c Zero-order rate d Collision rate 3 Which factor increases reaction rate by more successful collisions? a Volume b Pressure c Temperature d Color 4 Which factor can speed up a reaction by lowering activation energy? a Catalyst b Filter c Dilution d Inert gas 5 What describes the overall dependence of rate on reactant concentrations? a Half-life b Rate law c Collision theory d Activation energy 6 What is the specific rate constant called in the rate law? a Ea b k c Q d A 7 What type of rate equation applies to zero-order reactions for half-life? a t1/2 = k / [A]0 b t1/2 = k[A]0 c t1/2 = [A]0 / 2k d t1/2 = [A]0 / k 8 In a first-order reaction, half-life is: a Twice [A]0 b Constant and independent of [A]0 c Depends on [A]0 d Equal to time 9 Which concept involves particles colliding with proper orientation and energy? a Collision theory b Catalysis theory c Arrhenius model d Molecularity 10 Activation energy is the minimum energy required for: a A reaction to occur b Equilibrium to shift c Pressure to rise d Catalyst to work 11 Which quantity is constant for a zero-order reaction? (in terms of concentration change) a Rate is constant b Rate increases with time c Rate decreases with time d Rate depends on catalyst amount 12 For a first-order reaction, half-life is independent of what? a Temperature b Reaction order c Catalyst presence d Initial concentration 13 In Arrhenius equation, if T doubles, what happens to k approximately? a Increases linearly b Stays same c Increases exponentially d Halves 14 Collision theory primarily explains reaction rate based on? a Solvent polarity b Molecular collisions and orientation c Pressure alone d Crystal lattice 15 If concentration doubles for a zero-order reaction, rate? a Doubles b Halves c Quadruples d Remains unchanged 16 Specific rate constant k depends on? a Volume only b Temperature and mechanism c Pressure only d Catalyst mass only 17 In a first-order integrated rate equation, t½ is proportional to? a k / ln 2 b k * t c 1 / k d ln 2 / k 18 Activation energy (Ea) represents? a Total energy of products b Catalyst energy only c Energy released in reaction d Minimum energy for reaction to proceed 19 Catalysts affect rate by? a Changing stoichiometry b Lowering Ea c Increasing product stability d Increasing Ea 20 For a reaction following zero-order kinetics, plot of rate vs [A] is? a Positive slope b Vertical line c Horizontal line d Positive curving

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Chemical Kinetics Quiz

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Chemical Kinetics QuizVersión en línea

por zubia nadeem

What describes the average rate of a reaction over a time interval?

What is the rate at a precise instant called?

Which factor increases reaction rate by more successful collisions?

Which factor can speed up a reaction by lowering activation energy?

What describes the overall dependence of rate on reactant concentrations?

What is the specific rate constant called in the rate law?

What type of rate equation applies to zero-order reactions for half-life?

In a first-order reaction, half-life is:

Which concept involves particles colliding with proper orientation and energy?

Activation energy is the minimum energy required for:

Which quantity is constant for a zero-order reaction? (in terms of concentration change)

For a first-order reaction, half-life is independent of what?

In Arrhenius equation, if T doubles, what happens to k approximately?

Collision theory primarily explains reaction rate based on?

If concentration doubles for a zero-order reaction, rate?

Specific rate constant k depends on?

In a first-order integrated rate equation, t½ is proportional to?

Activation energy (Ea) represents?

Catalysts affect rate by?

For a reaction following zero-order kinetics, plot of rate vs [A] is?