Free Printable Rates, equilibrium and pH (Module 5.1)

1.

rate of reaction = change in conc of product or reactant/ x

a)

time (s)

b)

gas vol (dm3)

c)

con (moldm-3)

d)

Kc

2.

If the rate of reaction is 2, and a reactant with zero order is doubled, what is the new rate of reaction?

(a)

3.

If the rate of reaction is 3, and a reactant with first order is doubled, what is the new rate of reaction?

(a)

4.

If the rate of reaction is 2, and a reactant with second order is doubled, what is the new rate of reaction?

(a)

5.

what would the overall order of this reaction be [A]1[B][C]2

a)

3

b)

4

c)

2

d)

1

6.

rate = k[A]1[B]2

What does k stand for in the rate equation?

(a)

7.

What are the units of rate?

a)

mol dm-3 s-1

b)

mol-1 dm3 s-1

c)

mol dm-3

d)

s-1

8.

Zero order conc-time graphs have a decreasing half life. Which graph shows this?

a)

b)

9.

First order conc-time graphs have a constant half life. Which graph shows this?

a)

b)

10.

z = change in y/ change in x

What does z stand for?

(a)

11.

k = ln2/t 1/2

This is the equation to work out the rate constant from conc-time graphs. Which statements are true?

a)

t 1/2 = half life in seconds

b)

ln 2 = natural log 2

c)

k = rate constant

d)

t = temp in kelvin

12.

1/t is a measure of....

a)

Inital rate

b)

Rate constant

c)

Time taken for reaction to finish

d)

The rate order

13.

Which graph shows a zero order?

a)

b)

c)

14.

Which graph shows a first order?

a)

b)

c)

15.

Which graph shows a second order?

a)

b)

c)

16.

Definition:

The slowest step in a reaction mechanism of a multi-step reaction

(a)

17.

How many molecules are involved in the rate determining step, if the rate equation= $k\ =\left[CH_3Br\right]^2$

(a)

18.

How many molecules are involved in the rate determining step, if the rate equation= $k\ =\left[Br_2\right]$

(a)

19.

In an Arrhenius plot, what are the two axis?

a)

ln A

b)

ln k

c)

1/t

d)

Ea

20.

Increasing the temperature, causes...

a)

Doubled rate of reaction

b)

Doubled value of k

c)

Change in order of reaction

d)

Decrease in value of k

21.

In arrhenius equation, what unit is temperature measured in?

(a)

22.

$k=Ae^{-\frac{Ea}{RT}}$

What equation is this?

a)

Rate constant equation

b)

Ideal gas equation

c)

Arrhenius Equation

d)

Partial pressure

23.

In the equation:

$\ln k=\ln A\ -\left(\frac{Ea}{R}x\ \frac{1}{T}\right)$

On a graph, A is equal to:

a)

Y-intercept, when x=0

b)

gradient

c)

x-axis

d)

y-axis

24.

In the equation:

$\ln k=\ln A\ -\left(\frac{Ea}{R}x\ \frac{1}{T}\right)$

On a graph, Ea is equal to:

a)

Y-intercept, when x=0

b)

gradient

c)

x-axis

d)

y-axis

25.

In the equation:

$\ln k=\ln A\ -\left(\frac{Ea}{R}x\ \frac{1}{T}\right)$

On a graph, ln k is equal to:

a)

Y-intercept, when x=0

b)

gradient

c)

x-axis

d)

y-axis

26.

In the equation:

$\ln k=\ln A\ -\left(\frac{Ea}{R}x\ \frac{1}{T}\right)$

On a graph, 1/T is equal to:

a)

Y-intercept, when x=0

b)

gradient

c)

x-axis

d)

y-axis

27.

Which K, measures equillibrium concentrations?

a)

Kc

b)

Kp

c)

k

d)

Kw

28.

Which are not included in Kc equations?

a)

Pure liquids (e.g. H2O)

b)

Solids

c)

Noble gases

d)

Diatomic molecules

29.

Which K, uses partial pressures?

a)

Kc

b)

Kp

c)

Ka

d)

Kw

30.

Which two vaules must be found in order to use Kp?

a)

Mole fraction

b)

Partial pressure

c)

Equilibrium concentrations

d)

Total volume

31.

If the value of Kp/Kc is greater than 1, which is favoured:

a)

Reactants

b)

Products

32.

If the value of Kp/Kc is less than 1, which is favoured:

a)

Reactants

b)

Products

33.

Bronsted-Lowry Acid =

a)

H+ donor

b)

H+ acceptor

34.

Bronsted-Lowry Base=

a)

H+ donor

b)

H+ acceptor

35.

Which K, measures dissociation?

a)

Kc

b)

Kp

c)

Ka

d)

Kw

36.

$\frac{\left[H^+\left(aq\right)\right]\times\left[A^-\left(aq\right)\right]}{\left[HA\left(aq\right)\right]}$

Which equation is this?

a)

Ka

b)

Kc

c)

Kp

d)

Kw

37.

A larger Ka vaule =

a)

Stronger acid

b)

Weaker acid

Rates, equilibrium and pH (Module 5.1)

Total questions: 37

Worksheet time: 26mins

Similar Resources on Wayground