Free Printable Identifying Conjugate Acids/Bases

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Identifying Conjugate Acids/Bases

Total questions: 18

Worksheet time: 10mins

Name

Class

Date

A sour taste is a characteristic of:

acids

bases

neutral

pH scale

Which is a characteristic of a base?

tastes sour

found mostly in foods

feels slippery

turn litmus paper red

pH is the measure of the concentration of ______.

Acids

H+ ion

OH- ion

Bases

According to Arrhenius, what is the definition of an ACID?

a substance that contains hydroxide and ionizes to produce OH-

a substance that contains hydrogen and ionizes to produce H+

a substance that contains hydrogen and ionizes to produce OH-

a substance that contains hydroxide and ionizes to produce H+

According to Bronsted-Lowry, what is the definition of an BASE?

a substance that donates a hydrogen (H+) ion

a substance that donates a hydroxide (OH-) ion

a substance that accepts a hydrogen (H+) ion

a substance that accepts a hydroxide (OH-) ion

What is being donated/accepted between conjugate acid-base pairs?

a hydrogen (H+) ion

a hydroxide (OH-) ion

water

a neutron

What is the conjugate base in the following reaction?

HCO₃^-

HCl

H₂CO₃

Cl-

What is the conjugate acid in the following equation?

PO₄^3-

HNO₃

NO₃^-

HPO₄^2-

Which of the following is an Arrhenius Acid?

LiOH

CO₃^2-

OH^-

H₃PO₄

10.

Which of the following shows the correct conjugate acid base pair?

HCI (acid) / H₃O⁺ (conjugate base)

HCI (acid) / CI^- (conjugate base)

HCI (base) / CI^- (conjugate acid)

HCI (base) / H₃O⁺ (conjugate acid)

11.

If a solution is basic which ion will be more present?

H+

K+

OH-

H-

12.

Which of the following are properties of acids but not bases? Select all that apply.

Changes the color of an indicator

Sour taste

Reacts with metals to produce hydrogen gas

Feels slippery

13.

Neutralization is the process of an acid and a base reacting to form what? Select all that apply

An ionic salt

Hydronium ions

NaCl

Water

14.

An arrhenius acid

produces hydroxide ions in a solution

is a proton donor

produces hydrogen ions in a solution

is a proton acceptor

15.

An arrhenius base

produces hydroxide ions in a solution

is a proton donor

produces hydrogen ions in a solution

is a proton acceptor

16.

A bronsted lowry acid

produces hydroxide ions in a solution

is a proton donor

produces hydrogen ions in a solution

is a proton acceptor

17.

Acid-base conjugate pairs differ by a single

Electron

Proton

Neutron

Oxygen

18.

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

H₂SO₄, SO₄^2-

OH^-, H₂O

NH₄⁺, H₂O

H₂CO₃, HCO₃^-

100 %

Identifying Conjugate Acids/Bases

Total questions: 18

Worksheet time: 10mins

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