Reactivity 3.1

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

Card preview (24)

Front (Question)

Svante Arrheniu’s theory of acids

Back (Answer)

acidic substances dissociated in aqueous solutions to produce hydrogen ions Basic substances dissociated in aqueous solutions to produce hydroxide ions

Front (Question)

Bronsted-Lowry acid

Back (Answer)

hydrogen ion (proton) donor

Front (Question)

Bronsted-Lowry base

Back (Answer)

hydrogen ion (proton) acceptor

Front (Question)

What is a hydrogen ion?

Back (Answer)

Hydrogen atom that has lots its electron

Front (Question)

Why is the hydrogen ion basically a proton?

Back (Answer)

Very small and large charge density

Front (Question)

What happens when Bronsted-Lowry acid molecules mix with water?

Back (Answer)

They ionise HX -> H+ + X-

Front (Question)

What is the hydrogen ion attracted to?

Back (Answer)

Water molecules, forming the hydronium ion

Front (Question)

What are the chemical properties of acids in aqueous solution due to?

Back (Answer)

Presence of hydronium ions

Front (Question)

Conjugate-acid base pairs

Back (Answer)

Species that differ by one proton (acid written first)

#10

Front (Question)

Amphiprotic substances

Back (Answer)

substances that are capable of both accepting and donating a proton depending on reaction conditions

#11

Front (Question)

When does water act as a base

Back (Answer)

when reacting with a stronger acid

#12

Front (Question)

When does water act as an acid

Back (Answer)

when reacting with a stronger base

#13

Front (Question)

Amphoteric substances

Back (Answer)

Used to describe substances that can react as acid or basics

#14

Front (Question)

Example of amphoteric substances

Back (Answer)

ZnO ZnO + 2H+ -> Zn2+ + H2O Zn + H2O + OH- -> Zn(OH)4)2-

#15

Front (Question)

pH scale

Back (Answer)

measured scale that extends from 0-14 that show relative acidity, using a logarithmic scale

#16

Front (Question)

what is the midpoint of the pH scale

Back (Answer)

at 25 degrees, 7

#17

Front (Question)

Formula for pH

Back (Answer)

-log[H3O+]

#18

Front (Question)

Formula for [H3O+] from pH

Back (Answer)

[H3O+] = 10-pH

#19

Front (Question)

For strong monoprotic acids [HA] =

Back (Answer)

[H3O+]

#20

Front (Question)

Significant figures in the [H3O+] become

Back (Answer)

DP in pH

#21

Front (Question)

Self-ionisation of water

Back (Answer)

As it is an amphiprotic susbtance, it can act as an acid or a base depending on the cirumstances. Therefore, it can react with itself H2O + H2O -> H3O+ + OH- As water is a poor conductor of electricity, we can assert that there are very few of these ions formed

#22

Front (Question)

Ion product constant (Kw)

Back (Answer)

[H3O+] x [OH-] = 10^-14 mol2 dm-6 at 25 degrees

#23

Front (Question)

What is the ion product constant true for?

Back (Answer)

All aqueous solutions

#24

Front (Question)

Strong acids

Back (Answer)

Virtually completely ionise in aqueous solution