Classifying Acids and Bases: The Arrhenius Concept

Which of the following is true according the the Arrhenius theory of acids?

• A strong acid increases the OH- ion concentration in an aqueous solution.

• A strong acid increases the H+ ion concentration in an aqueous solution.

• A strong acid decreases the OH- ion concentration in an aqueous solution.

• A strong acid decreases the H+ ion concentration in an aqueous solution.

Which of the following is true according the the Arrhenius theory of bases?

• A strong base increases the OH- ion concentration in an aqueous solution.

• A strong base increases the H+ ion concentration in an aqueous solution.

• A strong base decreases the OH- ion concentration in an aqueous solution.

• A strong base decreases the H+ ion concentration in an aqueous solution.

Which of the following represents the formation of a hydronium ion?

• HCl_(aq) + NaOH_(aq) ---> H₂0_(l) + NaCl_(aq)

• HCl_(aq) ---> H⁺_(aq) + Cl^-_(aq)

• HCl_(aq) ---> H₃O⁺_(aq) + Cl^-_(aq)

• H₃O⁺_(aq) ---> H⁺_(aq) + H₂0_(l)

The pH scale is used to...

• measure the hydronium/hydrogen ion concentration in an aqueous solution.

• neutralize acids and bases.

• describe chemical reactions between acids and bases

• a scientific theory that describes how acids and bases act at a molecular level.

An aqueous solution with a pH ranging from 1 to 6 is considered...

• a neutral solution.

• a base.

• a hydrocarbon.

• an acid.

An aqueous solution with a pH ranging from 8 to 14 is considered...

• a neutral solution.

• a base.

• a hydrocarbon.

• an acid.

An aqueous solution with a pH of 7 is considered...

• a neutral solution.

• a base.

• a hydrocarbon.

• an acid.

Which of the following is true for a strong acid?

• red litmus paper turns blue

• blue litmus paper turns red

• red litmus remains red

• blue litmus remains blue

Which of the following is true for a strong base?

• red litmus paper turns blue

• blue litmus paper turns red

• red litmus remains red

• blue litmus remains blue

Which of the following represents an acid-base neutralization reaction?

• HCl_(aq) + NaOH_(aq) ---> H₂0_(l) + NaCl_(aq)

• HCl_(aq) ---> H⁺_(aq) + Cl^-_(aq)

• HCl_(aq) ---> H₃O⁺_(aq) + Cl^-_(aq)

• H₃O⁺_(aq) ---> H⁺_(aq) + H₂0_(l)