Free Printable Acids and Bases

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Acids and Bases

Total questions: 29

Worksheet time: 47mins

Name

Class

Date

Which is the correct set of acid properties.

sour taste, corrosive, change litmus from red to blue

sour taste, corrosive, change litmus from blue to red

sweet taste, slippery, change litmus from blue to red

sour taste, slippery, change litmus from blue to red

Neutral solutions have a pH of:

Which is true?

pH of less than 7 is basic; pH of more than 7 is acidic

pH of less than 7 is acidic; pH of more than 7 is basic

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

Acid

Base

Neither (Neutral)

Is pure water acidic, basic, or neutral?

Acidic

Basic

Neutral

Bases are located where on the pH scale?

any number can be a base

below 7

above 7

number 7 is a base

Bleach and oven cleaner are:

strong acids

weak acids

strong bases

weak bases

Which of the following is NOT a characteristic of an acid?

sour taste

corrosive

it feels slippery

it can burn the skin

According to the pH scale, which item is more acidic than lemons?

battery

vinegar

milk

blood

10.

According to the pH scale, which item is a stronger base than soap?

baking soda

ammonia solution

tomato

bleach

11.

In the reaction below, H₂O is a(n):

H₂SO₃ + H₂O --> H₃O⁺ + HSO₃^-

base

acid

conjugate acid

conjugate base

12.

Which compound is the conjugate acid? (Hint: Determine the base)

PO₄^3- + HNO₃ ==> NO₃^- + HPO₄^2-

PO₄^3-

HNO₃

NO₃^-

HPO₄^2-

13.

HSO₄^-+ H₂O → H₃O⁺+ SO₄^2-
Identify the Acid in the above reaction.

HSO₄^-

H₂O

H₃O⁺

SO₄^2-

14.

CO₃^2-(aq)+H₂O(l) → HCO₃^-(aq)+OH^-(aq)
Using the above reaction, which compound is the conjugate base?

CO₃^2-

H₂O

HCO₃^-

OH^-

15.

An arrhenius acid

produces hydroxide ions in a solution

is a proton donor

produces hydrogen ions in a solution

is a proton acceptor

16.

An arrhenius base

produces hydroxide ions in a solution

is a proton donor

produces hydrogen ions in a solution

is a proton acceptor

17.

A bronsted lowry base

produces hydroxide ions in a solution

is a proton donor

produces hydrogen ions in a solution

is a proton acceptor

18.

A bronsted lowry acid

produces hydroxide ions in a solution

is a proton donor

produces hydrogen ions in a solution

is a proton acceptor

19.

Identify the true statement about the following reaction:

F^- + H₂O --> HF +OH^-

H₂O is a bronsted lowry base

H₂O is not an acid or base according to either model

H₂O is a bronsted lowry acid

H₂O is an arrhenius acid

20.

Acid-base conjugate pairs differ by a single

Electron

Proton

Neutron

Oxygen

21.

Which of the following show an acid and its conjugate base pair (in that order)

H₂SO₄, SO₄^2-

OH^-, H₂O

NH₄⁺, H₂O

H₂CO₃, HCO₃^-

22.

In this reaction...
CH₃NH₂ + H₂O --> CH₃NH₃⁺ + OH^-CH₃NH₂ can be classified as which of the following? (HINT...follow the H⁺!!!)

A Brønsted-Lowry base

A Brønsted-Lowry acid

A Lewis acid

An Arrhenius acid

23.

NaOH is:

an Arrhenius base

an Arrhenius acid

neither an acid nor a base

both an acid and a base

24.

The conjugate base of H₂SO₄ is:

SO_4^-2

H₃SO₄⁺¹

HSO₄⁺¹

HSO₄^-1

25.

Acids produce _________ ions when they break down or dissocciate.

Hydroxide (OH-)

Water

Chlorine (Cl-)

Hydrogen (H+)

26.

Bases release ____________ ions when they break down or dissociate.

Hydrogen (H+)

Hydroxide (OH-)

Chlorine (Cl-)

27.

A hydrogen ion, H⁺, is the same as a(n):

neutron

electron

proton

hydroxide ion

28.

OH^-is called the:

hydrate ion

hydrogen ion

hydronium ion

hydroxide ion

29.

NH₃ + H₂O --> NH₄⁺+ OH^{-
What is the conjugate acid according the Bronsted-Lowry model?}

NH₃

H₂O

NH₄⁺

OH^-

100 %

Acids and Bases

Total questions: 29

Worksheet time: 47mins

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