A-level Acids

A-level Acids

12th Grade

12 Qs

quiz-placeholder

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A-level Acids

A-level Acids

Assessment

Quiz

Chemistry

12th Grade

Practice Problem

Hard

Created by

I Shillcock

Used 14+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the definition of a Bronsted-Lowry acid?

A substance that reacts with hydroxide ions

Anything that contains H+ ions

A proton donor

An acceptor of a lone pair of electrons

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the correct expression for the ionic product of water and its unit?

Kw = [H+][OH-] mol/dm3

Ka = [H3O+][OH-]/[H2O] mol/dm3

Ka = [H+][OH-] mol2/dm6

Kw = [H3O+][OH-] mol2/dm6

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

What is a strong acid?

Any acid with a concentration above 1 mol/dm3

Sulphuric acid

An acid that is totally dissociated into ions

An acid that can react with carbonate bases

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to Kw and pH when pure water is heated?

Kw increases and pH decreases

Nothing, pure water is neutral

Kw and pH both increase

Kw and pH both decrease

Kw decreases and pH increases

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the definition of pH?

-Ln[H+]

Log[H+]

The negative logarithm to base 10 of the hydrogen ion concentration

A measure of acidity from 1 to 14

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a weak acid?

Any acid with a concentration below 0.1 mol/dm3

An acid that has only slightly more positive H+ ions than negative ions

An acid with a pH between 4 and 6

An acid that has only partially dissociated into ions

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is a conjugate base?

A proton acceptor

A proton acceptor produced when an acid loses a proton

A particle that can join with a base

A particle produced when a base has joined to a proton

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