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chap4 question bank Questions & Answers

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  • ART 305
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  • ART 305

An unknown substance dissolves readily in water but not in benzene (a nonpolar solvent). Molecules of what type are present in the substance? A) neither polar nor nonpolar B) polar C) either polar or nonpolar D) nonpolar E) none of these :~~ B) polar 2. The interaction between solute part...

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  • September 8, 2024
  • 54
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ART 305
  • ART 305
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1 | P a g e | © copyright 2024/2025 | Grade A+




chap4 question bank Questions &
Answers-
1. An unknown substance dissolves readily in water but not in benzene (a nonpolar

solvent). Molecules of what type are present in the substance?

A) neither polar nor nonpolar

B) polar

C) either polar or nonpolar

D) nonpolar

E) none of these

✓ :~~ B) polar


2. The interaction between solute particles and water molecules, which tends to

cause a salt to fall apart in water, is called

A) hydration

B) polarization

C) dispersion

D) coagulation

E) conductivity

✓ :~~ A) hydration




Master01 | September, 2024/2025 | Latest update

, 2 | P a g e | © copyright 2024/2025 | Grade A+


3. Consider two organic molecules, ethanol and benzene. One dissolves in water

and the other does not. Why?

A) They have different molar masses.

B) One is ionic, the other is not.

C) One is an electrolyte, the other is not.

D) Ethanol contains a polar O-H bond, and benzene does not.

E) Two of these are correct.

✓ :~~ D) Ethanol contains a polar O-H bond, and benzene does not.


4. Polar molecules have an unequal distribution of charge within the molecule.

True or False?

✓ :~~ True


5. Which of the following is a strong acid?

A) HF

B) KOH

C) HClO4

D) HClO

E) HBrO

✓ :~~ C) HClO4


6. All of the following are weak acids except



Master01 | September, 2024/2025 | Latest update

, 3 | P a g e | © copyright 2024/2025 | Grade A+


A) HCNO

B) HBr

C) HF

D) HNO2

E) HCN

✓ :~~ B) HBr


7. Which of the following is not a strong base?

A) Ca(OH)2

B) KOH

C) NH3

D) LiOH

E) Sr(OH)2

✓ :~~ C) NH3


8. Which of the following is paired incorrectly?

A) H2SO4 - strong acid

B) HNO3 - weak acid

C) Ba(OH)2 - strong base

D) HCl - strong acid

E) NH3 - weak base



Master01 | September, 2024/2025 | Latest update

, 4 | P a g e | © copyright 2024/2025 | Grade A+


✓ :~~ B) HNO3 - weak acid


9. The man who discovered the essential nature of acids through solution

conductivity studies is

A) Priestly

B) Boyle

C) Einstein

D) Mendeleev

E) Arrhenius

✓ :~~ E) Arrhenius


10. A solid acid HX is mixed with water. Two possible solutions can be obtained.

Which of the following is true?

I. II.

A) In case I, HX is acting like a weak acid, and in case II, HX is acting like a strong

acid.

B) In case I, HX is acting like a strong acid, and in case II, HX is acting like a weak

acid.

C) In both cases, HX is acting like a strong acid.

D) In both cases, HX is acting like a weak acid.

E) HX is not soluble in water.




Master01 | September, 2024/2025 | Latest update

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