When X reacts with Y to give Z, the following graph is plotted. What can be deduced from the graph?

The reaction is zero order with respect to X.

The concentration of X is directly proportional to time.

The reaction is first order overall.

The reaction is first order with respect to X.

The table gives rate data for the reaction in a suitable solvent. C 4 H 9 Br + OH − → C 4 H 9 OH + Br − Which statement is correct?

The reaction occurs via S N 1 mechanism.

The rate expression is rate = k [C 4 H 9 Br] [OH − ].

The rate increases by a factor of 4 when the [OH − ] is doubled.

C 4 H 9 Br is a primary halogenoalkane.

Which is the first step in the CFC-catalysed destruction of ozone in UV light?

CCl 2 F 2 → •CClF 2 + Cl•

CCl 2 F 2 → CClF 2 + + Cl –

CCl 2 F 2 → CCl 2 F + + F –

CCl 2 F 2 → •CCl 2 F + F•

The data shows the effect of changing reactant concentrations on the rate of the following reaction at 25°C. F 2 (g) + 2ClO 2 (g) → 2FClO 2 (g) Which is correct for the order of reaction with respect to the fluorine concentration and the overall order of reaction?

Order with respect to [F 2 (g)] = 1 ; Order overall = 2

Order with respect to [F 2 (g)] = 2 ; Order overall = 1

Order with respect to [F 2 (g)] = 2 ; Order overall = 2

Order with respect to [F 2 (g)] = 1 ; Order overall = 1

Which statement describes the characteristics of a transition state relative to the potential energy of the reactants and products?

It is an unstable species with higher potential energy.

It is an unstable species with lower potential energy.

It is a stable species with lower potential energy.

It is a stable species with higher potential energy.

Which statement about a first-order reaction is correct?

The reactant concentration decreases exponentially with time.

The reactant concentration decreases linearly with time.

The rate of reaction remains constant as the reaction proceeds.

The rate of reaction increases exponentially as the reaction proceeds.

Consider the rate expression: Rate=k[X][Y] Which change decreases the value of the rate constant, k ?

Decrease in the reaction temperature

Increase in the reaction temperature

Increase in the concentration of X and Y

Decrease in the concentration of X and Y

The following experimental rate data were obtained for a reaction carried out at temperature T . A(g)+B(g)→C(g)+D(g)

Order with respect to A (g) = second ; Order with respect to B (g) = zero

Order with respect to A (g) = zero ; Order with respect to B (g) = second

Order with respect to A (g) = first ; Order with respect to B (g) = zro

Order with respect to A (g) = second ; Order with respect to B (g) = first

Which statement about a reaction best describes the relationship between the temperature, T, and the rate constant, k?

As T increases, k increases non-linearly.

As T increases, k decreases linearly.

As T increases, k decreases non-linearly.

As T increases, k increases linearly.

Which step is the rate-determining step of a reaction?

The step with the highest activation energy

The step with the lowest activation energy

The rate information below was obtained for the following reaction at a constant temperature. 2NO2(g)+F2(g)→2NO2F(g) What are the orders of the reaction with respect to NO2 and F2?

NO2 is first order and F2 is first order

NO2 is first order and F2 is second order

NO2 is second order and F2 is first order

NO2 is second order and F2 is second order

Consider the following reaction. 5Br−(aq)+BrO−3(aq)+6H+(aq)→3Br2(aq)+3H2O(l) The rate expression for the reaction is found to be: rate=k[Br−][BrO−3][H+]2 Which statement is correct?

Doubling the concentration of all of the reactants at the same time would increase the rate of the reaction by a factor of 16.

The units of the rate constant, k, are mol dm−3s−1.

A change in concentration of Br− or BrO−3 does not affect the rate of the reaction.

The rate expression for a reaction is: rate=k[X][Y] Which statement is correct?

As the temperature increases the rate constant increases.

As the temperature increases the rate constant decreases.

The rate constant increases with increased temperature but eventually reaches a constant value.

The rate constant is not affected by a change in temperature.

Consider the following reaction mechanism. Step 1H2O2+I−→H2O+IO−slowStep 2H2O2+IO−→H2O+O2+I−fast Which statement correctly identifies the rate-determining step and the explanation?

Step 1 because it is the slower step

Step 2 because it is the faster step

Step 1 because it is the first step

Step 2 because it is the last step

What is the effect of increasing temperature on the rate constant, k ?

The rate constant increases exponentially.

The rate constant does not change.

The rate constant decreases linearly.

The rate constant increases proportionally with temperature.

Which is true of an Arrhenius plot of lnk ( y -axis) against 1/T?

The activation energy can be determined from the gradient.

The graph goes through the origin.

The intercept on the x -axis is the activation energy.

The intercept on the y -axis is the frequency factor, A.

What happens when the temperature of a reaction increases?

The activation energy increases.

Topic 16 HL Chemistry Kinetics Quiz

49 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which is correct

A

B

C

D

Tags

NGSS.HS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which graph is obtained from a first order reaction?B

A

B

C

D

Tags

NGSS.HS-PS1-5

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which is correct for the reaction mechanism shown?

A

B

C

D

Tags

NGSS.HS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement is correct about a catalyst?

It decreases the activation energy of the forward reaction but not the reverse.

It increases the proportion of products to reactants in an equilibrium.

It decreases the enthalpy change of the reaction.

It changes the mechanism of the reaction.

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the order with respect to each reactant?

Order with respect to NO = 0; Order with respect to Cl2 = 1

Order with respect to NO = 1; Order with respect to Cl2 = 1

Order with respect to NO = 2; Order with respect to Cl2 = 1

Order with respect to NO = 2; Order with respect to Cl2 = 2

Tags

NGSS.HS-PS1-5

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Compounds X and Y were mixed and the time taken for a colour to appear was recorded at various reactant concentrations. What are the orders of reaction with respect to X and Y?

X = 1; Y = 2

X = 1/2; Y = 1/4

X = 2; Y = 1

X = 2; Y = 4

Tags

NGSS.HS-PS1-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The rate expression for the reaction is: rate = k [NO]²[O₂].
2NO (g) + O₂ (g) → 2NO₂ (g)
Which mechanism is not consistent with this rate expression?

A

B

C

D

Tags

NGSS.HS-PS1-5

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Topic 16 HL Chemistry Kinetics

Which is correct

Which graph is obtained from a first order reaction?B

Which is correct for the reaction mechanism shown?

Which statement is correct about a catalyst?

What is the order with respect to each reactant?

Compounds X and Y were mixed and the time taken for a colour to appear was recorded at various reactant concentrations. What are the orders of reaction with respect to X and Y?

The rate expression for the reaction is: rate = k [NO]²[O₂].
2NO (g) + O₂ (g) → 2NO₂ (g)
Which mechanism is not consistent with this rate expression?

What are correct labels for the Maxwell−Boltzmann energy distribution curves?

The reaction between NO₂ and F₂ gives the following rate data at a certain temperature.

When X reacts with Y to give Z, the following graph is plotted. What can be deduced from the graph?

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Topic 16 HL Chemistry Kinetics

Which is correct

Which graph is obtained from a first order reaction?B

Which is correct for the reaction mechanism shown?

Which statement is correct about a catalyst?

What is the order with respect to each reactant?

Compounds X and Y were mixed and the time taken for a colour to appear was recorded at various reactant concentrations. What are the orders of reaction with respect to X and Y?

The rate expression for the reaction is: rate = k [NO]2[O2].2NO (g) + O2 (g) → 2NO2 (g)Which mechanism is not consistent with this rate expression?

What are correct labels for the Maxwell−Boltzmann energy distribution curves?

The reaction between NO2 and F2 gives the following rate data at a certain temperature.

When X reacts with Y to give Z, the following graph is plotted. What can be deduced from the graph?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

The rate expression for the reaction is: rate = k [NO]²[O₂].
2NO (g) + O₂ (g) → 2NO₂ (g)
Which mechanism is not consistent with this rate expression?

The reaction between NO₂ and F₂ gives the following rate data at a certain temperature.