WorksheetsELL Level 2 - Conjugate Acids and Bases
Total questions: 24
Worksheet time: 12mins
For a solution, pH + pOH =
7
14
1.0 x 10-14
-log (1.0 x 10 -14)
Which of the following correctly identifies an acid and its conjugate base?
HH4+ , OH-
H2O , OH-
CaCO3 ,CaCl2
HNO3 , H2SO4
pH is the measure of the concentration of ______.
Acids
H+ ion
OH- ion
Bases
A substance that remains when a base has accepted an H+ ion is ..
A base
A conjugate acid
A conjugate base
What is being donated/accepted between conjugate acid-base pairs?
a hydrogen (H+) ion
a hydroxide (OH-) ion
water
a neutron
H+
K+
OH-
H-
Acid-base conjugate pairs differ by a single
Electron
Proton
Neutron
Oxygen
Which of the following show an acid and its conjugate base pair (in that order)
H2SO4, SO42-
OH-, H2O
NH4+, H2O
H2CO3, HCO3-
The conjugate acid of HCO3- is ___
H2CO3
CO3-2
HCO3-
H2O
The conjugate base of HCO3- is ___.
CO3-2
HCO3-
H2O
H2CO3
Given the reaction which compound is the Acid?
NH3
HCl
NH4+
Cl-
Given the reaction which compound is the conjugate base, if HCl is the acid?
NH3
NH4+
Cl-
Hal
What is the conjugate acid of PO4-3 in the following equation?
What is the conjugate base of HCl in the following reaction?
Cl-
What is the conjugate base in the following reaction?
HCO3-
HCl
H2CO3
Cl-
What is NH4+ in this equation?
Acid
Base
Conjugate Acid
Conjugate Base
Which of the following shows the correct conjugate acid / base pair?
HCI / H3O+
HCI / CI-
HCI / CI
HCI / H3O+
Which compound is the conjugate base?
HCO3- + HCl → H2CO3 + Cl-
HCO3-
HCl
H2CO3
Cl-
NH3 + H2O → NH4+ + OH-
What is H2O in this reaction?
acid
base
conjugate acid
conjugate base
In the reaction below, H2O is a....
H2SO3 + H2O → H3O+ + HSO3-
base
acid
conjugate acid
conjugate base
In the reaction
HCl + H2O → H3O+ + Cl-
what is the conjugate acid?
Given the equation:
H2SO4 + H2O ↔ H3O+ + HSO4-
What is the conjugate acid?
H2SO4
H2O
H3O+
HSO4- 1
Given the equation:
Ca(OH)2 + H2O ↔ Ca+2 + OH-
Is Ca(OH)2 this acidic or basic?
Acidic
Basic
Neutral
Amphiprotic
Given the equation:
H2O + H2O ↔ H3O+ + OH-
What type of compound is water?
Acidic
Basic
Neutral
Amphiprotic
