Acid-Base Theories Quiz

Acid-Base Theories Quiz

9th Grade

11 Qs

quiz-placeholder

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Acid-Base Theories Quiz

Acid-Base Theories Quiz

Assessment

Quiz

Chemistry

9th Grade

Easy

Created by

Miguel Bruzual C

Used 2+ times

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How does the Brønsted-Lowry theory improve upon the Arrhenius theory?

It explains why acids always contain OH⁻.

It includes reactions that only happen in gas phase.

It defines acids as species that accept electron pairs.

It defines acids as proton donors, even outside aqueous solutions.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the main difference between a Brønsted-Lowry base and a Lewis base?

Lewis bases always produce OH⁻.

Brønsted bases accept electrons; Lewis bases donate H⁺.

Brønsted bases accept protons; Lewis bases donate electron pairs.

There is no difference; both definitions are the same.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Why is water (H₂O) considered amphoteric under the Brønsted-Lowry theory?

It has both hydrogen and oxygen.

It can act as a proton donor or a proton acceptor.

It can dissolve acids and bases equally.

It always forms H⁺ and OH⁻.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which acid-base theory best explains the formation of AlCl₄⁻ from AlCl₃ and Cl⁻?

Arrhenius theory

Brønsted-Lowry theory

Lewis theory

None of the theories explain this

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Why does CH₃COOH qualify as an acid in all three acid-base theories?

It produces OH⁻ in water.

It contains a metal ion.

It donates H⁺ and accepts electron pairs from bases.

It only behaves as an acid in aqueous solutions.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the reaction NH₃ + H₂O ⇌ NH₄⁺ + OH⁻, which theories explain this behavior?

Only Arrhenius, because OH⁻ is formed.

Only Lewis, because NH₃ has lone pairs.

Brønsted-Lowry and Lewis, because NH₃ accepts H⁺ and donates electron pairs.

None, because NH₃ is not an acid.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A substance that donates an electron pair but does not donate a proton is best classified as:

A Brønsted acid

An Arrhenius base

A Lewis base

A neutral species

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