Question 1

According to the Arrhenius definition, which of the following best describes an acid when dissolved in water?

Accepted Answer

A substance that increases the concentration of $$\mathrm{H^+}$$ ions

Question 2

Which of the following compounds, when dissolved in water, will produce $$\mathrm{OH^-}$$ ions according to the Arrhenius definition?

Accepted Answer

$$\mathrm{NaOH}$$

Question 3

What are the ions formed when $$\mathrm{Sr(OH)_2}$$ dissolves in water?

Accepted Answer

$$\mathrm{Sr$$^{2+}$$}$$ and $$2\ \mathrm{OH^-}$$

Question 4

Which of the following best explains why the Arrhenius definition of acids and bases is limited?

Accepted Answer

It only applies to reactions in aqueous solutions

Question 5

When $$\mathrm{H_2SO_4}$$ dissolves in water, which ions are produced?

Accepted Answer

$$2\ \mathrm{H^+}$$ and $$\mathrm{SO_4$^{2-}}$$

Question 6

Which of the following is a correct dissociation equation for $$\mathrm{$$HBO_3$$} in $$water?

Accepted Answer

$$\mathrm{$$HBO_3$$} \rightarrow 3\ \mathrm{H^+} + \mathrm{BO_3$^{3-}}$$

Question 7

A student dissolves $$\mathrm{NaOH} in $$water. Which statement best describes the resulting solution?

Accepted Answer

It contains $$\mathrm{Na^+}$$ and $$\mathrm{OH^-}$$ ions

Question 8

Which of the following best describes the fundamental ions involved in the Arrhenius concept of acids and bases?

Accepted Answer

$$\mathrm{H^+}$$ and $$\mathrm{OH^-}$$

Question 9

Which of the following is a real-world example of an Arrhenius acid used in industry?

Accepted Answer

Sulfuric acid ($$\mathrm{H_2SO_4}) $$used in car batteries

Question 10

A solution contains $$\mathrm{OH^-}$$ ions in high concentration. According to Arrhenius, this solution is best classified as:

Accepted Answer

A base

Question 11

Which of the following equations correctly represents the dissociation of hydrochloric acid ($$\mathrm{HCl}) in $$water?

Accepted Answer

$$\mathrm{HCl} \rightarrow \mathrm{H^+} + \mathrm{Cl^-}$$

Question 12

Which of the following statements is true regarding the dissociation of $$\mathrm{H_2SO_4} in $$water?

Accepted Answer

It produces two $$\mathrm{H^+}$$ ions and one $$\mathrm{SO_4$^{2-}}$$ ion per molecule

Question 13

A patient accidentally ingests a strong base. According to the Arrhenius definition, what ion is most likely to be found in excess in their stomach?

Accepted Answer

$$\mathrm{OH^-}$$

Question 14

Which of the following best describes the process that occurs when $$\mathrm{NaOH} is $$added to water?

Accepted Answer

$$\mathrm{NaOH}$$ dissociates to form $$\mathrm{Na^+}$$ and $$\mathrm{OH^-}$$ ions

Question 15

Which of the following is NOT a limitation of the Arrhenius definition of acids and bases?

Accepted Answer

It explains acid-base behavior in all solvents

Arrhenius Acids and Bases: Definitions and Dissociation in Water

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