Unit 6.1.4: Oxides reacting with water

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/3

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

4 Terms

1
New cards

Period 3 element

Na

Mg

Al

Si

P

S

Period 3 oxide

Relative melting point

Chemical bonding

Structure

Element

Complete the table

Period 3 element

Na

Mg

Al

Si

P

S

Period 3 oxide

Na2O

MgO

Al2O3

SiO2

P4O10

SO2
SO3

Relative melting point

High

High

Very high

Very high

Low

Low

Chemical bonding

Ionic

Ionic

Ionic (with a degree of covalent)

Covalent

Covalent

Covalent

Structure

Giant ionic

Giant ionic

Giant ionic

Giant covalent

Simple molecular

Simple molecular

Element

Na

Mg

Al

Si

P

S

Electronegativity

0.9

1.2

1.5

1.8

2.1

2.5

2
New cards

Oxide

Chemical equation

pH

Comments

Na2O

MgO

Al2O3

SiO2

P4O10

SO2
SO3

Complete the table for the reactions of oxides with water

Oxide

Chemical equation

pH

Comments

Na2O

Na2O (s) + H2O (l) → 2NaOH (aq)

14
(strongly alkaline)

-

MgO

MgO (s) + H2O (l) → Mg(OH)2 (aq) 

10
(weakly alkaline)

-

Al2O3

No reaction

-

Al2O3 is insoluble in water

SiO2

No reaction

-

SiO2 is insoluble in water

P4O10

P4O10 (s) + 6H2O (l) → 4H3PO4 (aq)

2
(strongly acidic)

Vigorous / violent reaction

SO2
SO3

SO2 (g) + H2O (l) → H2SO3 (aq)
SO3 (g) + H2O (l) → H2SO4 (aq)

1
(strongly acidic)

-

3
New cards

Draw a table showing the formula of the oxide, bonding, product with water, pH of product, acid-base reactions and equations of each period 3 element

knowt flashcard image
4
New cards

Period 3 oxide

Chemical equation

Comments

Na2O

MgO

Al2O3

SiO2

P4O10

SO2

SO3

Complete the acid-base reactions of oxides

Period 3 oxide

Chemical equation

Comments

Na2O

Na2O (s) + 2HCl (aq) → 2NaCl (aq) + H2O (l)

-

MgO

MgO (s) + 2HCl (aq) → MgCl2 (aq) + H2O (l)

Used in indigestion remedies by neutralising the excess acid in the stomach

Al2O3

Al2O3 (s) + 3H2SO4 (aq) → Al2(SO4)3 (aq) + 3H2O (l)

Reacts with acid to form a salt and water

Al2O3 (s) + 2NaOH (aq) + 3H2O (l) → 2NaAl(OH)4 (aq)

Reacts with hot, concentrated alkali to form a salt

SiO2

SiO2 (s) + 2NaOH (aq) → Na2SiO3 (aq) + H2O (l)

Reacts with hot, concentrated alkali to form a salt and water

P4O10

P4O10 (s) + 12NaOH → 4Na3PO4 + 6H2O (l)

-

SO2

SO3

SO2 (g) + 2NaOH (aq) → Na2SO3 (aq) + H2O (l)

SO3 (g) + 2NaOH (aq) → Na2SO4 (aq) + H2O (l)

-