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Inorganic Chemistry > Period 3 > Flashcards

Period 3 Flashcards

(68 cards)

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1
Q

Rank elements of period 3 from highest melting point to lowest

A

Si>Al>Mg>Na>s8>p4>cl2>Ar

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2
Q

What are the products when Na reacts with O2

A

Na2O

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3
Q

What are observations when Na reacts with O2

A

White solid

Yellow flame

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4
Q

Products of Mg reaction with O2

A

MgO(s)

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5
Q

Observation of Mg reaction with O2

A

White solid

White flame

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6
Q

Products when Al reacts with O2

A

Al2O3(s)

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7
Q

Observations when Al reacts with O2

A

White solid

Bright white flame

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8
Q

Observation and product of reaction of Si with O2

A

SiO2(s)
Grey/white solid
Very slow reaction

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9
Q

What are products when P4 reacts with O2 in limited heat

A

P4O6 (s)

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10
Q

What are products when P4 reacts with O2 in excess heat

A

P4O10(s)

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11
Q

Observations of reaction of P4 woth O2

A

White solid

White flame

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12
Q

Product and observation of reaction of S8 with O2 with heat

A

SO2 (colourless gas)
Blue flame
Yellow solid disappears

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13
Q

What are the conditions of reaction of SO2 with O2

A

V2O5-catalyst
Heat
Product formed-SO3

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14
Q

Name the type of reaction when period 3 elements react with oxygen

A

Exothermic Redox

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15
Q

Name the basic period 3 oxides

A

Na2O

MgO

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16
Q

Name an amphoteric oxide in period 3 and describe its bonding and structure

A

Al2O3
Ionic with covalent character
Giant ionic

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17
Q

Name the acidic oxides in period 3

A 
SiO2
P4O6
P4O10
SO2
SO3
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18
Q

What are the products of the reaction
Na2O + H2O—-> ?
And what is pH of solution

A

NaOH(aq)

PH=14 (alkaline)

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19
Q

MgO+H2O—->?

pH of solution?

A

Mg(OH)2 (aq)

pH=8 (slightly alkaline)

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20
Q

Al2O3 + H2O—->

A

Insoluble

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21
Q

SiO2 + H2O—->

A

Insoluble

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22
Q

P4O6 + H20—->?

pH=?

A

H3PO3

pH=3

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23
Q

P4O10+H2O—–>?

pH=?

A

H3PO4

pH=3

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24
Q

SO2 + H2O—->?

pH=?

A

H2SO3(aq)

pH=2

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25
SO3 + H2O-----> ? | pH= ?
H2SO4 pH=1 Acidic
26
Na2O + HCl----->?
NaCl+H2O
27
MgO+HCl---->
MgCl2+ H2O
28
Al2O3 + HCl----->
AlCl3 + H2O
29
Al2O3 + NaOH (excess)---->
NaAl(OH)4
30
SiO2 + conc. Hot NaOH---->
Na2SiO3 + H2O
31
P4O6 + NaOH---->
Na3PO3 + H2O
32
P4O10 + NaOH---->
Na3PO4+H2O
33
SO2 + NaOH---->
Na2SO3 + H2O
34
SO3(g) + NaOH---->
Na2SO4 + H2O
35
What is the anion of SO2
SO3²-
36
What is the anion of SO3
SO4²-
37
What is the anion of P4O6
PO3³-
38
What is the anion of P4O10
PO4³-
39
What is the anion of CO2
CO3²-
40
What is the anion of SiO2
SiO3²-
41
What are the anions of NO2
NO3- and NO2-
42
Basic Oxide + Acidic Oxide--->?
Salt only
43
Na+H2O---->
Na(OH) + H2(g)
44
Mg + H2O---->
Mg(OH)2 slow reaction
45
Mg + H2O(g)/steam---->
MgO + H2 (g) vigerous reaction
46
Na+Cl2(g)------>? | Observations
NaCl White solid Yellow flame
47
Mg + Cl2---->? | Observations?
MgCl2(s) White solid White flame
48
2Al + 3Cl2----> | Observations?
Al2Cl6 White solid White flame
49
Si + Cl2----> | Observation?
SiCl4 (l) | Colorless liquid
50
P4 + (limited) Cl2 -----> | Observation?
PCl3 Colorless liquid White flame
51
P4 + excess Cl2 ----> | Observation?
PCl5 White solid White flame
52
Type of reaction between period 3 elements amd Cl2?
Exothermic Redox
53
Conditions for reaction of period 3 elements with O2 and Cl2
Heat
54
Describe the structure and bonding in NaCl
Ionic bonding | Giant Ionic lattice
55
Describe the structure and bonding in Al2Cl6
Covalent | Simple molecular structure
56
Describe structure and bonding in PCl5
Covalent | Simple molecular structure
57
What happens when NaCl is placed in water
Dissolves Na+(aq) Cl- (aq) ions pH= 7 (neutral)
58
What happens when MgCl2 is added to water
Mg²+(aq) Cl-(aq) Dissolves pH= 6.5 Slightly acidic
59
AlCl3 + H2O--->
Partial hydrolysis [Al(OH)(H2O)5]+2 + H+ 3Cl- pH=3 (slightly acidic)
60
SiCl4 + H2O----> | Observations?
``` SiO2/ Si(OH)4 + 4HCl White fumes of HCl gas White ppt Complete hydrolysis pH= 2 (acidic) ```
61
PCl3 + H2O---->
Complete hydrolysis H3PO3 + HCl pH= 2
62
PCl5 + H2O---->
Complete hydolysis H3PO4 + HCl(g) pH= 2 *acidic chlorides react with water to form acidic solutions*
63
Is nitric acid a strong or weak acid
Strong
64
Is phosphoric and phosphurous acid strong or weak?
Weak
65
Is sulfurous acid a strong or weak acid?
Weak
66
Describe lattice structure of SiO2
Giant Tetrahedral 4 Si-O bonds
67
Observation when PCl5 reacts with excess water
Steamy/misty fumes
68
Describe as fully as you can what would you see when sodium is reacted with water
Metal floats Dissolves Vigerous reaction Effervescence of H2 gas

Inorganic Chemistry (4 decks)

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