Antara berikut yang manakah mewakili tindak balas endotermik?
Which of the following represent an endothermic reaction?
Kuiz Kimia BAB 3 TINGKATAN 5 (Set 2)
Quiz
•
Chemistry
•
11th Grade
•
Hard
NOR Moe
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20 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Antara berikut yang manakah mewakili tindak balas endotermik?
Which of the following represent an endothermic reaction?
A Fotosintesis
Photosynthesis
B Pembakaran
Combustion
C Peneutralan
Neutralisation
D Penyesaran
Displacement
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Rajah 1 menunjukkan perubahan suhu apabila serbuk kuprum(II) sulfat kontang dilarutkan dalam air suling. Apakah jenis tindak balas yang berlaku dalam Rajah 1?
Diagram 1 shows the change in temperature when anhydrous copper(II) sulphate powder is dissolved in distilled water.
A. Redoks
Redoxs
B. Endotermik
Endothermic
C. Penyesaran
Displacement
D. Eksotermik
Exothermic
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Apakah maksud nilai bahan api?
What is the meaning of fuel value?
A Jumlah tenaga yang dibebaskan apabila satu gram bahan api dibakar lengkap dalam oksigen berlebihan.
The amount of energy released when one gram of fuel is burned completely in excess oxygen.
B Jumlah tenaga yang dibebaskan apabila satu mol bahan api dibakar lengkap dalam oksigen berlebihan.
The amount of energy released when one mol of fuel is burned completely in excess oxygen.
C Jumlah tenaga yang diserap apabila satu gram bahan api dibakar lengkap dalam oksigen berlebihan.
The amount of energy absorbed when one gram of fuel is burned completely in excess oxygen.
D Jumlah tenaga yang dibebaskan apabila bahan bakar dibakar dalam oksigen berlebihan untuk membentuk satu mol gas karbon dioksida dan air.
The amount of energy released when fuel is burned in excess oxygen to form one mole of carbon dioxide gas and water.
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Persamaan termokimia berikut mewakili tindakbalas peneutralan di antara 25 cm3 asid nitrik dan 25 cm3 larutan kalium hidroksida yang sama kemolaran. Suhu campuran naik sebanyak 7.0 oC.
[Muatan haba tentu larutan =4.2 J g-1 oC, Ketumpatan 1g cm-3]
The following thermochemical equation represent the neutralization reaction between 25 cm3 nitric acid and 25 cm3 of potassium hydroxide solution of the same molarity. The temperature of mixture increased by 7.0 oC.
[Specific heat capacity of the solution = 4.2 J g-1 oC-1, density of solution 1 g cm-3]
HNO3 (aq) + KOH(aq) 🡪 KNO3 (aq) + H2O(aq) ; ∆H = -57.3 kJ mol-1
Apakah kemolaran pada kedua-dua larutan?
What is the molarity of the both solution?
A 0.528 mol dm-3
B 1.028 mol dm-3
C 2.108 mol dm-3
D 2.248 mol dm-3
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Persamaan kimia berikut menunjukkan pembakaran lengkap butanol.
The following chemical equation shows the complete combustion of butanol.
C4H9OH + 6O2 🡪 4CO2 + 5H2O
Berapakah jisim butanol yang diperlukan untuk menghasilkan 360 cm3 gas karbon dioksida pada keadaan bilik?
[Jisim molar butanol = 74 g mol-1; Isipadu molar gas = 24 dm3 mol-1 pada keadaan bilik]
What is the mass of butanol is required to produce 360 cm3 of carbon dioxide gas at room condition?
[Molar mass of butanol = 74 g mol-1; molar volume gas = 24 dm3 mol-1 at room condition]
A 0.09 g
B 0.028 g
C 0.59 g
D 0.278 g
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Rajah 2 menunjukkan gambar aras tenaga bagi suatu tindak balas kimia.
Diagram 2 shows an energy level diagram for a chemical reaction.
Antara pernyataan berikut. yang manakah benar menerangkan gambar rajah aras tenaga dalam rajah 2?
Which of the following statements correctly describes the energy level diagram in diagram 2?
A Semasa tindak balas. suhu campuran menurun
During the reaction, the temperature of the mixture decreases.
B ∆H bertanda negatif untuk tindak balas kimia yang menyerap haba daripada persekitaran.
∆H has a negative sign for chemical reactions that absorb heat from the environment
C Apabila 1 mol Mg bertindak balas dengan 1 mol H2SO4 untuk membentuk 1 mol MgSO4 dan 1 mol gas H2, sebanyak 467 kJ tenaga haba diserap dari persekitaran.
When 1 mole of Mg reacts with 1 mole of H2SO4 to form 1 mole of MgSO4 and 1 mole of H2 gas, 467 kJ of heat energy is absorbed from the environment.
D Tindak balas antara magnesium, Mg dan asid sulfurik, H2SO4 membentuk magnesium sulfat. MgSO4 dan gas hidrogen, H2 ialah tindak balas eksotermik.
The reaction between magnesium, Mg and sulphuric acid, H2SO4 forms magnesium sulphate. MgSO4 and hydrogen gas, H2 is an exothermic reaction.
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Seorang pelajar telah menjalankan satu eksperimen untuk menentukan haba penyesaran antara kuprum, Cu dengan larutan argentum nitrat, AgNO3. Dalam eksperimen ini, serbuk kuprum, Cu berlebihan ditambah kepada 100 cm3 larutan argentum nitrat, AgNO3 0.5 mol dm-3. Haba penyesaran dalam eksperimen itu ialah -105 kJ mol-1.
Hitung perubahan suhu bagi tindak balas tersebut.
[Muatan haba tentu = 4.2 J g-1 oC-1]
A student has conducted an experiment to determine the heat of displacement for the reaction between copper, Cu and silver nirate solution, AgNO3. In this experiment, excess copper powder was added to 100 cm3 of argentum nitrate solution, AgNO3, 0 5 mol dm-1. The heat of displacement in the experiment is -105 kJ mol-1. Calculate the temperature change tor the reaction
[Specific heat capacity = 4.2 J g-1 oC-1]
A 12.5 oC
B 10.5 oC
C 6.25 oC
D 5.25 oC
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