Chapter 8
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Chapter 8. Nomenculature. Chemical Nomenculature. A system of naming compounds. IUPAC rules are designed to name compounds. Common names: H2O-water. Ionic- metal+nometal. molecular- nonmetals. Exceptions: polyatomic ions. Practice Ex 8.1-Pg.255. Types of Binary Ionic compounds :.

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Chapter 8

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Chapter 8

Chapter 8

Nomenculature


Chemical nomenculature

Chemical Nomenculature

  • A system of naming compounds.

  • IUPAC rules are designed to name compounds.

  • Common names: H2O-water.

  • Ionic- metal+nometal.

  • molecular- nonmetals.

  • Exceptions: polyatomic ions.

  • Practice Ex 8.1-Pg.255.


Types of binary ionic compounds

Types of Binary Ionic compounds:

  • Binary: Compound in which only two elements are present.

  • Binary ionic compound: Compound in which monoatomic +ve charged metal ions and monoatomic –ve charged nonmetal ions are present.


Types of binary ionic compounds1

Types of Binary Ionic compounds

  • Fixed charge binary ionic compound: Metal ion can form only one type of +ve ion.

  • Fixed charge metals are group I A, II A,Al3+, Ga3+, Zn2+,Cd2+, Ag+

  • Variable charge binary ionic compound: Metal ion can form more than one type of +ve ion.

  • Cr2+, Cr3+, Co2+, Co3+, Cu+, Cu2+, Au+, Au3+, Fe2+, Fe3+, Pb2+, Pb4+, Sn2+, Sn4+, Mn2+, Mn3+


Nomenculature for binary ionic compounds

Nomenculature for binary ionic compounds

  • Fixed charged metals take the full name of the element plus the word “ion”

  • Na+-sodium ion

  • Variable charged metal ions take the full name of the element followed by a roman numeral( ) plus the word ion.

  • Cu2+ - copper (II) ion.

  • Nonmetal ions=stem of the name+ ide + word” ion”

  • Cl- chloride ion.

  • Learn table 8.2-P.258


Name the following

Name the following:

  • KCl Na2O

  • MgF2 Be3N2

  • CuO Cu2O

  • AuCl3 Mn2S3

  • Do Practice Ex: 8.2,8.3 P.259.


The ic and ous system

The ic and ous system.

  • Higher-ic

  • Lower-ous.

  • Table 8.3 P.261.


Write formulas for the following

Write formulas for the following:

  • iron (III) choride: tin (II) fluoride

  • stannic bromide auric oxide

  • plumbous fluoride ferrous bromide

  • ferric bromide copper(III) chloride


Nomenculature for ionic compounds containing polyatomic ions

Nomenculature for ionic compounds containing polyatomic ions:

  • Learn table 8.4- P. 263.

  • If the polyatomic ion is +ve, its name is substituted that for metal.

  • If the polyatomic ion is –ve, its name is substituted for the nonmetal stem plus ide.


Nomenculature for ionic compounds containing polyatomic ions1

Nomenculature for ionic compounds containing polyatomic ions:

  • Na3PO4 K2CO3

  • Fe3(NO3)3 Co(NO3)2

  • Cu2SO4 Fe2 (SO4 )3

  • NH4CN (NH4)3 PO4


Ternary compound

Ternary compound

  • A compound containing three different elements.


Nomenculature for binary molecular compounds

Nomenculature for Binary Molecular Compounds

  • A molecular compound in which only 2 nonmetals are present.

  • 1. Name of first nonmetal used in full.

  • 2. Stem of the name of second nonmetal + ide ending

  • 3. Appropriate suffix used.

  • Table 8. 5, P.266.


Name the following1

Name the following:

  • CCl4 NCl3

  • CO

  • P4 S6

  • S4 N4 S2O

  • PF3 CF4

  • Exception: H2S-

    HCl-


Systematic name

Systematic Name

  • A name of a compound based on IUPAC rules that conveys information about the composition of the compound.


Common name

Common Name

  • Name of a compound not based on IUPAC rules and that does not convey the information about the composition of the compound.

  • Learn table 8.6- Common Names.P.268


Nomenculculature for acids

Nomenculculature for acids:

  • Acid: A H containing compound that yields Hydrogen ions when dissolved in water.

  • Ex: HCl, HNO3, H2SO4, HCN, H3PO4


Rules for naming acids

Rules for Naming acids

1.Name of negative ion ends with ide.

the prefix hydro + stem of the negative ion + suffix ic+ the word acid

2. Name of negative ion ends with ate

Name of –ve ion less ate ending + suffix ic + word acid.

3.Name of negative ion ends with ite.

Name of –ve ion less ite ending + suffix ous+ the word acid.


Name the following2

Name the following:

  • Name the following acids:

  • H2CO3 HClO3

  • HF HClO2

  • H2SO4 HClO

  • HBr HClO4


Nonoxy acid

Nonoxy acid

  • Composed of H and other nonmetals other than oxygen that produce H+ in aqueous solution.


Oxy acid

Oxy acid

  • Composed of H, O, other elements that produce H+ in aqueous solution.

  • Table 8.7:P.272:aq and dry state nomenculatures.

  • Do Practice Ex: 8.9, 8.10-Pg. 275


Homework problems

Homework problems

P.276: 1,3,9,13,15, 19, 23, 25, 27, 29, 31, 35, 37, 39, 41, 49, 51, 53, 55, 57, 61, 63, 65, 67, 71, 73, 79, 81, 83, 85, 87, 101, 103, 115, 119.


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