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Chemical properties and reactions in aqueous solutions Quiz

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#1

Which of the following substances is an electrolyte?

Sodium chloride (table salt)
Explanation

Ionizes in solution to conduct electricity.

#2

What is the product of the neutralization reaction between HCl and NaOH?

H2O
Explanation

Forms water and a salt.

#3

Which of the following is NOT a characteristic of acids?

They have a pH greater than 7.
Explanation

Acids have pH less than 7.

#4

What is the chemical formula for sulfuric acid?

H2SO4
Explanation

Formula of a common strong acid.

#5

Which of the following is a characteristic property of bases?

They turn red litmus paper blue.
Explanation

Bases react with litmus paper to change its color.

#6

What is the chemical formula for hydrochloric acid?

HCl
Explanation

Formula of a common strong acid.

#7

What happens to the oxidation state of an atom when it undergoes oxidation?

It increases
Explanation

Gain of electrons.

#8

Which of the following is a strong acid?

Hydrochloric acid (HCl)
Explanation

Fully ionizes in solution.

#9

What is the common name for the reaction between an acid and a base?

Neutralization
Explanation

Formation of water and a salt.

#10

Which of the following is a weak acid?

Acetic acid (CH3COOH)
Explanation

Partially ionizes in solution.

#11

Which of the following ions does not undergo reduction in a galvanic cell?

Ag⁺ (Silver ion)
Explanation

Acts as the oxidizing agent.

#12

In a redox reaction, the substance that loses electrons is said to be undergoing what process?

Oxidation
Explanation

Loss of electrons.

#13

What type of reaction is the formation of water from hydrogen and oxygen?

Synthesis
Explanation

Combining of elements to form a compound.

#14

What is the driving force for a spontaneous chemical reaction?

Increase in entropy
Explanation

Tendency toward disorder.

#15

What is the pH of a solution with [H⁺] = 1 × 10⁻⁷ M?

7
Explanation

Neutral pH.

#16

What is the reducing agent in the reaction: 2Fe³⁺ + Sn²⁺ → 2Fe²⁺ + Sn⁴⁺?

Sn²⁺
Explanation

Species that gets oxidized.

#17

What type of reaction is the reaction between an acid and a base?

Neutralization
Explanation

Acid-base reaction producing salt and water.

#18

What is the oxidation state of chlorine in HClO₃?

+5
Explanation

Oxidation state of chlorine in chloric acid.

#19

What is the product of the reaction between sulfuric acid and calcium hydroxide?

CaSO4 + H2O
Explanation

Forms a salt and water.

#20

In the reaction: 2K + 2H2O -> 2KOH + H2, which species is oxidized?

K
Explanation

Loss of electrons by potassium.

#21

What is the oxidation state of nitrogen in NO₃⁻ (nitrate ion)?

+5
Explanation

Oxidation state of nitrogen in nitrate.

#22

What is the net ionic equation for the reaction between silver nitrate (AgNO3) and sodium chloride (NaCl)?

Ag⁺ + Cl⁻ → AgCl
Explanation

Representation of ions participating in reaction.

#23

Which of the following substances is amphoteric?

Water (H2O)
Explanation

Can act as an acid or a base.

#24

Which of the following is an example of a redox reaction?

Combustion of methane
Explanation

Transfer of electrons between reactants.

#25

Which of the following is a spectator ion in the reaction: Ba(NO3)2 + Na2SO4 -> BaSO4 + 2NaNO3?

NO3⁻
Explanation

Ions that do not participate in the reaction.

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