Quiz 2
Chem 1303.001
General Chemistry
Fall 2009
Name (print legibly)___________________________________________ Seat no.__________
1.
(60 points)
Fill in the five names and five formulas in the table below.
Name
Formula
hydrogen bromide
HBr (pure)
hydrobromic acid
HBr (in water)
mercury(I) cyanide
Hg2(CN)2
ammonium hydrogen phosphate
(NH4)2HPO4
arsenic tribromide
AsBr3 (molecular compound)
manganese(II) acetate
Mn(C2H3O2)2
sodium periodate
NaIO4
phosphorus pentafluoride
PF5
aluminum hydrogen sulfate
Al(HSO4)3
cobalt(II) sulfate octahydrate
CoSO4•8H2O
2.
(10 points)
The Group 2A elements are called ____alkaline earth metals_____.
3.
(10 points)
Explain.
It is correct to refer to “molecules of SO2.” It is not correct to refer to “molecules of KBr.”
SO2 is a covalent (molecular) compound and exists as individual SO2 molecules.
KBr is an ionic compound and exists as an array of cations and anions in the solid state.
4.
(10 points)
The empirical formula of Al2Cl6 is _______ AlCl3___________.
The empirical formula of P2O5 is ________ P2O5___________.
5.
(10 points)
The number of protons in Mn2+ is _______25_______.
The number of electrons in Mn2+ is ______23_________.
Quiz 2
Chem 1303.001
General Chemistry
Fall 2009
Name (print legibly)___________________________________________ Seat no.__________
1.
2.
(60 points)
(10 points)
Fill in the five names and five formulas in the table below.
Name
Formula
hydrogen iodide
HI (pure)
hydroiodic acid
HI (in water)
ammonium perchlorate
NH4ClO4
mercury(I) hypobromite
Hg2(BrO)2
diarsenic tetrachloride
As2Cl4 (molecular compound)
iron(II) sulfite
FeSO3
magnesium dichromate
MgCr2O7
dinitrogen tetrafluoride
N2 F4
calcium selenide
CaSe
nickel(III) sulfate octahydrate
Ni2(SO4)3•8H2O
The Group 1A elements are called ____alkali metals_____.
3. (10 points) It is correct to refer to “molecules of NO2.” It is not correct to refer to “molecules of KCl.”
Explain.
NO2 is a covalent (molecular) compound and exists as individual NO2 molecules.
KCl is an ionic compound and exists as an array of cations and anions in the solid state.
4.
(10 points)
The empirical formula of Al2I6 is ________ AlI3_________.
The empirical formula of P2S5 is ________ P2S5___________.
5.
(10 points)
The number of protons in Mg2+ is _______12________.
The number of electrons in Mg2+ is _______10________.
Quiz 2
Chem 1303.001
General Chemistry
Fall 2009
Name (print legibly)___________________________________________ Seat no.__________
1. (60 points) Fill in the five names and five formulas in the table below.
2.
(10 points)
3. (10 points)
Explain.
Name
Formula
hydrogen cyanide
HCN (pure)
hydrocyanic acid
HCN (in water)
iron(II) acetate
Fe(C2H3O2)2
mercury(I) periodate
Hg2(IO4)2
phosphorus pentabromide
PBr5
aluminum hydrogen phosphate
Al2(HPO4)3
sodium dichromate
Na2Cr2O7
diphosphorus tetraiodide
P 2 I4
magnesium selenide
MgSe
chromium(II) nitrate pentahydrate
Cr(NO3)2•5H2O
The Group 8A elements are called noble gases, rare gases, or inert gases.
It is correct to refer to “molecules of CO2.” It is not correct to refer to “molecules of LiF.”
CO2 is a covalent (molecular) compound and exists as individual CO2 molecules.
LiF is an ionic compound and exists as an array of cations and anions in the solid state.
4.
(10 points)
The empirical formula of B2Cl4 is _________ BCl2_______.
The empirical formula of P3O7 is _______ P3O7___________.
5.
(10 points)
The number of protons in Fe2+ is _______26_______.
The number of electrons in Fe2+ is ______24__________.
Quiz 2
Chem 1303.001
General Chemistry
Fall 2009
Name (print legibly)___________________________________________ Seat no.__________
1.
2.
(60 points)
(10 points)
3. (10 points)
Explain.
Fill in the five names and five formulas in the table below.
Name
Formula
hydrogen fluoride
HF (pure)
hydrofluoric acid
HF (in water)
nickel(II) hydroxide
Ni(OH)2
mercury(I) chromate
Hg2CrO4
carbon tetraiodide (or tetriodide)
CI4
aluminum hydrogen phosphate
Al2(HPO4)3
calcium bromate
Ca(BrO3)2
sulfur difluoride
SF2
vanadium (III) oxide
V 2 O3
cobalt(II) sulfate pentahydrate
CoSO4•5H2O
The Group 7A elements are called ___________halogens________________.
It is correct to refer to “molecules of CO.” It is not correct to refer to “molecules of KF.”
CO is a covalent (molecular) compound and exists as individual CO molecules.
KF is an ionic compound and exists as an array of cations and anions in the solid state.
4.
(10 points)
The empirical formula of B2F4 is _______ BF2___________.
The empirical formula of N2O5 is ______ N2O5_____________.
5.
(10 points)
The number of protons in Fe3+ is ______26________.
The number of electrons in Fe3+ is _____23__________.