Chemistry: Chapter 7
Write the formula for ammonium carbonate.
(NH4)2CO3
what is the formula for the percent of an element in a compound?
(molar mass of element / molar mass of compound) x 100 %
`What is the oxidation number of P in PCl3?
+ 3
What is the oxidation number of Cl in ClO3 - ?
+ 5
What is the oxidation number of N in HNO3?
+ 5
What is the oxidation number of S in H2SO4?
+ 6
What is the oxidation number of U in UF6?
+ 6
What are the three requirements for ionic compounds?
1. They need to start with a metal or ammonium 2. When you're writing them out, they need to have the formula unit (simplest ratio) 3. The total positive and negative charges must be equal
What are the ten prefixes used when naming molecular compounds?
1. mono 2. di 3. tri 4. tetra 5. penta 6. hexa 7. hepta 8. octa 9. nona 10. deca
Write the formula for silver sulfate.
Ag2SO4
Write the formula for aluminum acetate.
Al(C2H3O2)3
Find the molecular formula for a substance that is 80.0% C and 20.0 % H and has a molecular formula mass of 30.
C2H6
Write the formulas for the following molecular compound: carbon tetraiodide
CI4
Write the formulas for the following molecular compound: carbon monoxide
CO
Write the formula for copper (I) thiosulfate.
Cu2S2O3
Find the percent of water in sodium carbonate decahydrate.
H2O : 62.97 %
Write the formula for mercury (I) dichromate.
Hg2Cr2O7
Find the empirical formula and the name for a substance that is 26.56 % K, 35.41 % Cr, and 38.03 % O.
K2Cr2O7 : potassium dichromate
Find the percent composition of ammonium phosphate.
N : 28.19 % H : 8.13 % P : 20.77% O : 42.92 %
Write the formulas for the following molecular compound: dinitrogen monoxide
N2O
Write the formulas for the following molecular compound: diphosphorus pentaoxide
P2O5
Find the empirical formula and the name for a substance that is 43.67 % P and 56.33 % O.
P2O5 : diphosphorus pentoxide
Find the molecular formula and the name for a substance that has an empirical formula of P2O5 and a molecular formula mass of 283.889.
P4O10 tetraphosphorus decoxide
Write the formulas for the following molecular compound: sulfur trioxide
SO3
oxidation numbers
also called oxidation states, assigned to the atoms in molecules and polyatomic ions to show the general distribution of electrons among the bonded atoms
Write the name for the following ionic compound: (NH4)2SO4
ammonium sulfate
Name this molecular compound: CO2
carbon dioxide
Name this molecular compound: CCl4
carbon tetrachloride
H2CO3
carbonic acid
empirical formula (simplest formula)
consists of the symbols for the elements and subscripts showing the smallest whole number ratio of atoms
Oxyacids
contain H, O, and a third element
Write the name for the following ionic compound: CuSO3
copper (II) sulfite
Name this molecular compound: N2O4
dinitrogen tetroxide
Name this molecular compound: N2O3
dinitrogen trioxide
HBr
hydrobromic acid
HCl
hydrochloric acid
HF
hydrofloric acid
HI
hydroiodic acid
Write the name for the following ionic compound: Fe3(PO4)2
iron (II) phosphate
HNO3
nitric acid
HNO2
nitrous acid
H3PO4
phosphoric acid
Name this molecular compound: PO4
phosphorus tetroxide
Write the name for the following ionic compound: AgNO3
silver nitrate
H2SO4
sulfuric acid
H2SO3
sulfurous acid
Write the name for the following ionic compound: Sn(CrO4)2
tin (IV) chromate
