5.3 Acids, Bases and pH

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

What are acids ?

Back (Answer)

They dissociate H+ ions into an aqueous solution.

Front (Question)

What are bases ?

Back (Answer)

They dissociate and release OH- ions into an aqueous solution.

Front (Question)

What is ionic equation for water ?

Back (Answer)

H+ + OH- = H2O

Front (Question)

Are alkalis a soluble base ?

Back (Answer)

Yes

Front (Question)

What is a Bronsted-Lowry acid described as ?

Back (Answer)

Acid that acts as a proton donor.

Front (Question)

What is a Bronsted-Lowry base described as ?

Back (Answer)

Base that acts as a proton acceptor.

Front (Question)

What is a conjugate acid-base pair ?

Back (Answer)

Contains 2 species that can be interconverted by the transfer of a proton between the acid and base.

Front (Question)

What is the acid base equation for the hydronium ion ?

Back (Answer)

HCl + H2O = H3O+ + Cl- A1 B2 A2 B1

Front (Question)

What does a mono basic, dibasic and tribasic acid refer to ?

Back (Answer)

Refers to the total number of hydrogen ions in the acid that can be replaced per molecules in an acid-base reaction.

#10

Front (Question)

What is the reaction with an acid and a metal ?

Back (Answer)

Acid + metal = salt + hydrogen

#11

Front (Question)

What is the ionic equation equation for the reaction between an acid and a metal ?

Back (Answer)

2H+ + Mg = Mg2+ + H2

#12

Front (Question)

What is the reaction with an acid and a carbonate ?

Back (Answer)

Acid + carbonate = salt + water + carbon dioxide

#13

Front (Question)

What is the ionic equation for the reaction with an acid and a carbonate ?

Back (Answer)

2H+ + CO3 = Cu2+ + H2O + CO2

#14

Front (Question)

What is the reaction with an acid and a metal oxide ?

Back (Answer)

Acid + metal oxide = salt + water

#15

Front (Question)

What is the ionic equation with an acid and a metal oxide ?

Back (Answer)

2H+ + MgO = Mg2+ + H2O

#16

Front (Question)

What is the reaction of an acid with an alkali ?

Back (Answer)

Acid + alkali = salt + water

#17

Front (Question)

What is the ionic equation of the reaction of an acid with an alkali ?

Back (Answer)

H+ + OH- = H2O

#18

Front (Question)

What value of pH does a low value of H+ ions show ?

Back (Answer)

High pH value.

#19

Front (Question)

What value of pH does a high value of H+ ions show ?

Back (Answer)

Shows a low pH.

#20

Front (Question)

How do you work out pH using logarithms ?

Back (Answer)

pH = -log [ H+ ]

#21

Front (Question)

How do you work out H+ ions concentration if you are given the pH ?

Back (Answer)

[H+] = 10* -pH

#22

Front (Question)

What does a change in one pH number equal to in difference in H+ ions ?

Back (Answer)

Equal to 10x the difference in H+ ion concentration, so there is a large difference in hydrogen ion concentrations between pH 2 and pH 3.

#23

Front (Question)

What is a strong acid ?

Back (Answer)

Acid that fully dissociates all of its H+ ions into an aqueous solution.

#24

Front (Question)

What is a weak acid ?

Back (Answer)

Acid that partially dissociated some of its H+ ions into an aqueous solution.