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CHM 1045
Polyatomic ions
33
Chemistry
Undergraduate 1
10/21/2014

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Term
ammonium
Definition
NH4^+
Term
Mercury (I)
Definition
Hg2^2+
Term
Mercury (II)
Definition
Hg^2+
Term
Carbonate
Definition
CO3^2-
Term
Chlorate
Definition
ClO3^-
Term
Chlorite
Definition
ClO2^-
Term
Chromate
Definition
CrO4^2-
Term
Cyanide
Definition
CN-
Term
Dichromate
Definition
Cr2O7^2-
Term
Hydroxide
Definition
OH^-
Term
Hypochlorite
Definition
ClO^-
Term
Nitrate
Definition
NO3^-
Term
Nitrite
Definition
NO2^-
Term
Oxalate
Definition
C2O4^2-
Term
Perchlorate
Definition
ClO4-
Term
Permanganate
Definition
MnO4^-
Term
Peroxide
Definition
O2^2-
Term
Phosphate
Definition
PO4^3-
Term
Phosphite
Definition
PO3^3-
Term
Sulfate
Definition
SO4^2-
Term
Sulfite
Definition
SO3^2-
Term
Acetate
Definition
C2H3O2^-
Term
Heat released by the system (exothermic)
Definition
q is negative
Term
Heat absorbed by the system (endothermic)
Definition
q is positive
Term
Work done on the system by the surroundings
Definition
w is positive
Term
Work done by the system on the surroundings
Definition
w is negative
Term
Volume decrease
Definition
w is positive
Term
Volume increase
Definition
w is negative
Term
Water soluble compounds (absolute)
Definition
Group 1A elements, ammonium (NH4^+), nitrate ion (NO3^-), acetate ion (C2H3O2^-), and chlorate ion (ClO3^-)
Term
Water soluble compounds (exceptions)
Definition
Chloride ion (Cl-), Bromide ion (Br-), Iodide Ion (I-)

unless it contains (Ag+), (Hg2^2+), and (Pb^2+)
Term
Compounds containing the sulfate ion (SO4^2-)
Definition
Water soluble except if it contains (Ag+), (Hg2^2+), (Pb^2+), (Ca^2+), (Sr^2+), or (Ba^2+)
Term
Water insoluble compounds
Definition
Carbonate ion, Phosphate ion, chromate ion, sulfide ion, or hydroxide ion. Unless it contains a group 1A element or ammonium or Ba2^+ in the case of hydroxide.
Term
Bicarbonate
Definition
HCO3-
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