CHM2046 Exam 3 Descriptive Chemistry

Chemical equation CO2 and H2O

H2O(l) + CO2(g) --> H2CO3(aq)

H2CO3

carbonic acid

chemical equations that affect ph (carbonates)

1. H2CO3(aq) --> H+(aq) + HCO3-(aq)

2. HCO3-(aq) --> H+(aq) + CO32-(aq)

1 multiple choice option

dioxide

O2

oxide

O 2-

superoxide

O2 1-

peroxide

O2 2-

disproportionation reaction of Cl2

Cl2(g) + 2OH-(aq) --> Cl-(aq) + ClO-(aq) + H2O(l)

disproportionation reaction

an element in an intermediate oxidation state is simultaneously oxidized and reduced, producing 2 different products

sulfur oxide +4

SO2

sulfur oxide +6

SO3

sulfurous acid +4

H2SO3

sulfuric acid +6

H2SO4

sulfur oxide +4 in H2O

SO2 + H2O --> H2SO3

sulfur oxide +6 in H2O

SO3 + H2O --> H2SO4

ionic (saltlike) hydride

hydrogen and reactive metal, hydride ion (H-)

covalent (molecular) hydride

hydrogen and nonmetal, H+

CaH2

ionic hydride

HCl

covalent hydride

dehydration-condensation reaction

connects smaller molecules into larger chains by removing water molecules

dehydration-condensation of Na2HPO4

2Na2HPO4 --> H2O + Na4P2O7

dinitrogen

N2 0

nitrous oxide

N2O +1

nitric oxide

NO +2

nitrous acid

HNO2 +3

nitrogen dioxide

NO2 +4

nitric acid

HNO3 +5

most acidic nitrogen oxide?

HNO3 (nitric acid)

decomposition of CaCO3

CaCO3(s) --> CaO(s) + CO2(g)

CaO in H2O

CaO(s) + H2O(l) --> Ca2+(aq) + 2OH-(aq)