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Binary Molecular Compounds. Binary Molecular Compounds. Binary molecular compounds are composed of two different nonmetals examples: CO, SO 2 , N 2 H 4 , P 4 Cl 10 These compounds are named by using a prefix to indicate the number of atoms of each element present (see table in notebook ).
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Binary Molecular Compounds • Binary molecular compounds are composed of two different nonmetals • examples: CO, SO2, N2H4, P4Cl10 • These compounds are named by using a prefix to indicate the number of atoms of each element present (see table in notebook ).
H2O Dihydrogen Monoxide
The prefix mono- is often omitted especially when the first element would have the prefix mono- CO (example: CO is named carbon monoxide, not monocarbon monoxide).
NF3 is nitrogen trifluoride N2O4 is dinitrogen tetroxide (Note: dropped an 'a') P4S10 is tetraphosphorous decasulfide Name the following compounds: NF3 N2O4 P4S10
dichlorine heptaoxide is Cl2O7 carbon hexasulfide is CS6 octaphosphorous pentaoxide is P8O5 • Write formulas for the following compounds: • dichlorine heptaoxide • carbon hexasulfide • octaphosphorous pentaoxide
Acids • Acids are compounds that give off hydrogen ions, (H+) when dissolved in water. When a compound has hydrogen as its cation the substance is generally an acid • Examples: HCl, H2SO4, H3PO3 • The rules for naming acids are based on the anion portion of the acid formula.
Rules for Naming Acids • The names of acids are based on the ending of the anion name. • Examples: HCl, H2SO4, H3PO3
Rules for Naming Acids • The names of acids are based on the ending of the anion name. • Examples: HCl, H2SO4, H3PO3 • Cl‾ = chloride
Rules for Naming Acids • The names of acids are based on the ending of the anion name. • Examples: HCl, H2SO4, H3PO3 • Cl‾ = chloride • SO42‾ = sulfate
Rules for Naming Acids • The names of acids are based on the ending of the anion name. • Examples: HCl, H2SO4, H3PO3 • Cl‾ = chloride • SO42‾ = sulfate • PO33‾ = phophite
Name the acids • HNO2 • HCN • H3PO4 nitrous acid hydrocyanic acid phosphoric acid
Write formulas for the following acids • chromic acid • hydroiodic acid • chlorous acid H2CrO4 HI HClO2
Homework • Do the 4 “HOMEWORK” (Not example) problems on the Binary Molecular Compounds and Acids note page. • Do these problems on your own paper. • Homework will be collected tomorrow.