PENILAIAN KURIKULUM 1CHEMISTRY FORM 5SMK DATO PENGGAWA TIMUR

NAMA: KELAS: ..

SECTION A

Answer all questions in this section. Write the objective answers in the boxes given.

1Which of the following reactions occurs at highest rate?Yang manakah berikut tindak balas yang berlaku dengan paling cepat

ARustingpengaratan

BRespirationRespirasi

CCombustionpembakaran

DPhotosynthesisfotosintesis

2The reaction between zinc and hydrochloric acid is represented by the following equation:Tindak balas Antara zink dan asid hidroklorik adalah seperti di bawah

Zn + 2HCl ZnCl2 + H2A student wants to determine the rate of reaction in a school laboratory. Which of the following methods is the most suitable?Pelajar mahu menentukan kadar tindak balas di dalam makmal. Kaedah yang sesuai adalah

ADetermine the change in temperature of the solution with timeMenentukan perubahan suhu dengan masa

BDetermine the change in the concentration of zinc chloride with timeMenentukan perubahan kepekatan zink klorida dengan masa

CDetermine the volume of hydrogen gas given off with timeMenentukan isipadu gas hydrogen yang terbebas dengan masa

DDetermine the change in the concentration of hydrochloric acid with timeMenentukan perubahan kepekatan asid hidroklorik dengan masa

3Diagram 1 shows the apparatus set up for an experiment to determine the rate of reaction.Rajah 1 menunjukkan alat radas eksperimen untuk menentukan kadar tindak balas.

Which of the following tecniques is the most suitable to determine the rate of reaction?Teknik yang manakah paling sesuai untuk menentukan kadar tindak balas

ARecord the times as soon as precipitate is formedCatat masa apabila mendakan terbentuk

BRecord the times taken to obtain the maximum temperatureCatat masa untuk mendapatkan suhu optimum

CRecord the times as soon as the cross mark cannot be seenCatat masa apabila tanda X hilang dari pandangan mata

DRecord the times taken for the change of the ph value until a fixed ph is obtainedCatat masa apabila nilai ph berubah sehingga mendapat nilai ph yang tetap

4Which of the following is the correct match of a low rate of reaction and the high rate of reaction?Pilih pasangan yang betul untuk tindak balas yang berlaku dengan perlahan dan tindak balas yang berlaku dengan lambat

Low rate of reactionHigh rate of reaction

ANeutralisation between hydrochloric acid and sodium hydroxide solutionIron rusting

BDouble decomposition between lead (II) nitrate solution and potassium iodide solution Neutralisation between hydrochloric acid and sodium hydroxide solution

CIron rustingFermentation of glucose solution

DFermentation of glucose solutionDouble decomposition between lead (II) nitrate solution and potassium iodide solution

5Table 1 shows the total volume of oxygen gas, collected in the decomposition reaction of hydrogen peroxide.

What is the overall average rate of reaction?

A0.152 cm3s-1

B0.208 cm3s-1

C0.278 cm3s-1

D0.310 cm3s-1

6The reaction between hydrochloric acid and zinc produce hydrogen gas. The reaction is complete in 50 seconds and the maximum volume of gas produced is 25 cm3

What is the average rate of the reaction?

A0.5 cm3s-1

B1.0 cm3s-1

C2.0 cm3s-1

D4.0 cm3s-1

7Table shows the volume of oxygen gas released from the decomposition of hydrogen peroxide

What is the average rate of decomposition of hydrogen peroxide for the first four minutes

A2.50 cm3 min-1

B3.00 cm3 min-1

C3.75 cm3 min-1

D15.00 cm3 min-1

8Table shows the total volume of gas evolved at the different intervals for the dissociation of hydrogen peroxide.

What is the rate of reaction in the second minutes?

A14.0 cm3 min-1

B16.0 cm3 min-1

C18.0 cm3 min-1

D28.0 cm3 min-1

9Diagram shows the graph of volume of carbon dioxide gas against time when 5 g of marble chips is added to 50cm3 of 0.2 mol dm-3 hydrochloric acid

At what time the rate of reaction the highest?

AT1

BT2

CT3

DT4

10The equation represents the reaction between sodium carbonate and hydrochloric acid.Na2CO3 + 2HCl 2NaCl + H2O + CO2The mass of the beaker and its contents is plotted against time. Which graph represents what happens when sodium carbonate reacts with an excess of dilute hydrochloric acid?

11

Table shows the experiments carried out to study the rate of reaction between zinc carbonate and nitric acid.

Which of the following graph represents the two experiments?

12Aluminium powder reacts faster with hydrochloric acid then an aluminium strip because

AThe particles in the aluminium strip are packed closely

BThe particles of aluminium powder have more kinetic energy

CThe aluminium powder has a larger total surface area

DThere is a layer of aluminium oxide on the aluminium

13

An experiment is carried out to study the rate of reaction between marble and hydrochloric acid to produce carbon dioxide gas

ExperimentSubstance

IExcess marble and 50.0 cm3 of 2 mol dm-3 hydrochloric acid

IIExcess marble and 50.0 cm3 of 1 mol dm-3 hydrochloric acid

Which of the following graphs represents the two experiments?

14When the temperature of a reacting mixture increase, the rate of reaction increase. Which statement explains why the rate of reaction increases?

AThe total surface area of the reactant particles increases

BThe total number of the reactant particles per unit volume increases

CThe reactant particles move faster and collide more often with one another

DThe reactant particles which collide more often are able to overcome the lower activation energy.

15When a few drops of copper (II) sulphate solution is added to a mixture of zinc powder and dilute sulphuric acid, the rate of reaction increases. Which statement best explains why the rate of reaction increases?

ALower activation energy

BIncreases the collision frequency

CIncreases the concentration of sulphate ion in the mixture

DMakes the orientation of collision between the reacting particles favourable

16The diagram shows the energy profile of a reaction. Ea is the activation energy for this reaction.

What will change the activation energy from Ea to Ea ?

ATemperature

BCatalyst

Cconcentration

DTotal surface area

17If you want to cook 100 potatoes within a short time, which is the most suitable method?

ABoil the potatoes in a pan

BBoil the potatoes in a pressure cooker

CSteam the potatoes in a steamer

DFry the potatoes in a wok

18Which of the following is the slowest reaction?

AA few manganese (IV) oxide powder is added to hydrogen peroxide solution

BLead (II) nitrate solution is added to sodium chloride solution

CDilute sulphuric acid is added to sodium thiosulphate solution

D A few zinc powder is added to copper (II) sulphte

19The following equation represents the reaction between calcium carbonate and hydrochloric acid.CaCO3 + 2HCl CaCl2 + H2O + CO2Which of the following factors cannot increases the rate of this reaction?

ADecreases the size of calcium carbonate

BIncreases the temperature of the mixture

CIncreases the concentration of hydrochloric acid

DIncreases the volume of hydrochloric acid

20The diagram shows the set up of the apparatus for an experiment to determine the rate of reaction between sodium thiosulphate and sulphuric acid

Which of the following combination of conditions take the shortest time for the mark X to disappear from sight?

21The following chemical equation represents the reaction between calcium carbonate and hydrochloric acid.

Which changes can be used to determine the rate of reaction?

IMass of calcium carbonate per unit time

IIVolume of carbon dioxide released per unit time

IIIColour of the solution per unit time

IVMass of precipitate produced per unit time

AI and II

BI and III

CII and IV

DIII and IV

22The following statements are related to the collision theory of a reaction.

IThe total surface area of the reactant particles increases

IIThe kinetic energy of the reactant particles increases

IIIThe frequency of the collision between the reactant particles increases

IVThe number of the reactant particles per one unit of volume increases

Which of the following combination is true about the effect of the rise in temperature on the reactant particles?

AI and II only

BII and III only

CIII and IV only

DI and IV only

23The equation show the reaction between zinc and hydrochloric acid.Zn + 2HCl ZnCl2 + H2

Which of the following statement are true about the reaction?

IThe mass of zinc decreases with time

IIPh of hydrochloric acid increases with time

IIIRate of hydrogen gas released increases with time

IVFrequency of collision between H+ ions and zinc atoms decreases with time

AI and III only

BIII and IV only

CI, II and IV only

DII,III and IV only

24The following equation shows the decomposition of hydrogen peroxide,2H2O2 H2O + O2

What is the volume of oxygen gas, produces from the decomposition of 500cm3 of 2 mol dm-3 hydrogen peroxide at standard temperature and pressure (STP)

A11.2dm3

B22.4 dm3

C33.6 dm3

d44.8 dm3

25The equation below represents the reaction to extract aluminium from aluminium oxide2Al2O3 4Al + 3O2What is the mass of aluminium that can be extracted from 102 g of aluminium oxide?

A13.5 g

B27.0 g

C54.0 g

D108.0 g

1

6111621

2

7121722

3

8131823

4

9141924

5

10152025

SECTION B

1Diagram 5 shows the apparatus set up for the reaction between 40.0 cm3 of 0.1 mol dm-3 hydrochloric acid and excess small calcium carbonate chips.

The volume of gas produced is measured at 30 second intervals. Table 5.2 shows the results obtained.

(a)Write the chemical equation for the reaction [2M]

..

(b)Draw the graph of volume of gas produced against time [3M]

(c )From the graph, determine the rate of reaction at 60 seconds. [2M]

(d)On the graph that you have drawn in 1(b) sketch a curve that you would get if the experiment is repeated using excess large calcium carbonate chips? [1M]

(e )Based on collision theory, explain how the size of calcium carbonate affects the rate of reaction. [3M]

..

2A student carried out two experiments to investigate the effects of the factor influencing the rate of reaction. Table 1 shows the results of the experiments.

(a)(i)What is the factor that influences the rate of reaction in both experiment. [1 M]

.

(ii)Calculate the maximum volume of hydrogen gas produced. [2M][Relative atomic mass; Mg=24, Molar gas volume = 24 dm3 mol-1 at room condition]

(b)Calculate the average rate of reaction in [2M]

(i)Experiment I:

(ii)Experiment II:

(c )(i)Compare the rate of reaction between experiment I and II. [1M]

.

(ii)Explain the answer in c(i) with to the collision theory [3M]

.

.

(d)Sketch the graphs for the volume of hydrogen gas against time for experiment I and II on the same axes. [2M]

3Write the chemical equation below.

a.Dilute hydrochloric acid reacts with magnesium

.

b.Dilute sulphuric acid reacts with zinc oxide

.

c.Dilute nitric acid reacts with copper(II) carbonate

d.Dilute sulphuric acid reacts with potassium hydroxide solution

.

e.Dilute nitric acid reacts with copper(II) oxide

f.Dilute sulphuric acid reacts with lead(II) carbonate

.

g.Dilute hydrochloric acid reacts with sodium hydroxide solution

h.Dilute sulphuric acid reacts with zinc

.

i.Dilute sulphuric acid reacts with ammonia aqueous

j.Magnesium metal react with oxygen

k.Copper(II)oxide react with hydrogen

..

l.Zinc react with Copper(II) Sulphate solution

..

m.Silver nitrate react with sodium carbonate

.END OF QUESTION..

Di sediakan oleh: Di sahkan oleh:

.. ..(WAN NOR AZLINA WAN ABDULLAH) KP KIMIA 2015

1