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Acids and Bases (Objective Questions)

1. Hydrogen chloride in toluene cannot conduct electricity because it is

Hidrogen klorida dalam toluena tidak dapat mengalirkan elektrik kerana ia

A a weak acid

asid lemah

B only partially ionizesterion separasahaja

C exist as molecule

wujud sebagai molekulD a covalent compound

sebatian kovalen

2. 1M sodium hydroxide, NaOH solution contains1M larutan natrium hidroksida, NaOH mengandungi

I 4 g NaOH in 10 cm3 solution4 g NaOH dalam 10 cm3 larutan

II 40 g NaOH in 1 dm3 solution

40 g NaOH dalam 1 dm3 larutanIII 4 g NaOH in 100 cm3 solution

4 g NaOH dalam 100 cm3 larutan

IV 1 g NaOH in 25 cm3 solution

1 g NaOH dalam 25 cm3 larutan

A I and III

B II and IVC II and III

D I and IV

3. X solution with concentration 1 mol dm-3 has a pH of 2. Which of the following is a X

solution?

Larutan X berkepekatan 1 mol dm-3 mempunyai pH 2. Antara berikut yang manakah

larutan X?

A Sodium hydroxide

Natrium hidroksida

B Ammonia aqueousAmmonia akueus

C Ethanoic acidAsid etanoik

D Sulphuric acid

Asid sulfuric

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4.

Diagram 1

What is the molarity, of the phosphoric acid , H3PO4 in mol dm-3 ?

[ Relative atomic mass: H = 1, O = 16, P = 31 ]

Berapakah kemolaran asid fosforik , H3PO4 dalam mol dm-3?

A 1.25

B 1.28

C 1.45D 2.45

5. What is the volume of 0.50 mol dm-3 potassium hydroxide, KOH solution required toneutralize 100 cm3 of 0.1 mol dm-3 sulphuric acid, H2SO4?

Berapakah isipadu kalium hidroksida, KOH 0.50 mol dm-3 yang diperlukan untuk

meneutralkan 100 cm3 asid sulfurik, H2SO4 0.1 mol dm-3 ?

A 60 cm3

B 40 cm3

C 30 cm3

D 20 cm3

6. Which of the following substances partially ionise in water?Antarabahan-bahan berikut, yang manakah mengion separa dalam air?

A Potassium hydroxideB Sodium hydroxide

C Ammonia

D Nitric acid

7. What is the volume of 3.65 g dm-3 hydrochloric acid needed to exactly neutralize 20 cm3

of 0.2 mol dm-3 sodium hydroxide solution?Berapakah isipadu asid hidroklorik yang diperlukan untuk meneutralkan 0.2 mol dm-3larutan natrium hidroksida?

A 10 cm3

B 20 cm3

C 30 cm3

D 40 cm3

Phosphoric acid 122.5 g dm-3H3PO4

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8. Which of the following substances suitable to reduce acidic soil?

Bahan manakah yang sesuai untuk mengurangkan keasidan tanah?

I sodium nitrite

II Powdered lime

III Potassium iodideIV Ashes of burnt wood

A I and IIB I and III

C II and IV

D III and IV

9. Which of the following substances has a pH value greater than 7?

Antara bahan berikut, yang manakah mempunyai nilai pH lebih daripada 7?

A SoapB Vinegar

C Orange juiceD Propanoic acid

10. What is the mass of potassium hydroxide contained in 250 cm3 of 0.5 mol dm-3potassium hydroxide?

Berapakah jisim kalium hidroksida dalam 250 cm3 larutan kalium hidroksida 0.5 mol

dm-3 ?

[ Relative atomic mass: H = 1, O = 16, K = 39 ]

A 56 g

B 28 gC 14 g

D 7 g

Answer:

1 C 6 C

2 B 7 D

3 D 8 C

4 A 9 A

5 B 10 D