Test 3
H2SO3
A certain oxyacid is derived from the oxyanion SO3^2- the formula for the oxyacid is
false
Cl-, Br- and I- are mostly insoluble
14
How many total atoms are in the formula Al2(CO3)3
False
SO2 is an ionic compound
barium chloride
a precipitate is expected to be formed when an aqueous solution of sodium sulfate is added to an aqueous solution of
false
a precipitation reaction will occur when sodium chloride is mixed with potassium nitrate
combustion reaction
a reaction in which a substance reacts with oxygen emitting heat and forming oxygen containing compounds is an example of a
gas evolution reaction
a reaction which forms a gaseous product is an example of a
precipitation reaction
a reaction which forms a solid product is an example of a
PbCl2
all of the following compounds are soluble in water except
ionic compound
ammonium fluoride is considered which of the following
water with another compound dissolved in it
an aqueous solution is
the symbols and formulas of all reactants and products
before a chemical equation can be written one must know
9
how many oxygen atoms are in the formula Al2(CO3)3
2
if you had an aqueous mixture that contained Ag+, K+ an dPb+2 cations how many different solids could precipitate if a chloride solution was added
2
if you had an aqueous mixture that contained Ag+, K+ and Pb+2 cations how many different solids could precipitate if a chloride solution was added
S
in writing the chemical equation for a precipitation reaction what abbreviation of the physical state must appear with one of the products
CO2
methane gas (CH4) on complete combustion in air produces
2Na + 2H2O →2NaOH (aq) + H2(g)
sodium metal reacts with water to form aqueous sodium hydroxide and hydrogen gas which equation below best describes the balanced equation for this reaction
False
the correct formula for calcium fluoride is CaF3-
false
the following equation is balanced CH4+2O2→CO2 + H2O
False
the following reaction is balanced AgNO3+ 2NH4Cl→AgCl + (NH4)2NO3
false
the formation of a gas is evidence of a chemical reaction while the emission of light is not
Mg(CIO3)2
the formula for potassium chlorate is KCIO3 the formula for magnesium chloride is MgCl2 what is the formula for magnesium chlorate
all samples of a given compound have the same proportion of their constituent elements
the law of constant composition states
False
the name of KNO3 is potassium nitratide
False
the subscripts in a chemical formula represent the relative mass of each atom in a chemical compound
1 nitric acid +1 sodium hydroxide→ 1 sodium nitrate +1 water
what are the coefficients for the following reaction when it is properly balanced
2 Na3(PO4) + 3Ba(NO3)2→ 6 Na(NO3) + 1Ba3(PO4)2
what are the coefficients for the following reaction when it is properly balanced
2 Na3PO4+ 3Ba(NO3)2 → 6NaNO3 + 1 Ba3 (PO4)2
what are the coefficients for the following reaction when it is properly balanced
2 potassium iodide+ 1 lead (II) acetate+1 lead(II) iodide + 2 potassium acetate
what are the coefficients for the following reaction when it is properly balanced
2HCL +1Mg→1MgCl2 + 1H2
what are the coefficients for the following reaction when it is properly balanced
H+ + Cl- + K+ + OH-→ H2O + K+ + Cl-
what is the complete ionic equation for the reaction of hydrochloric acid with potassium hydroxide
Pb2+ +2NO3- + 2K+ +2I- →PbI2(s) + 2K+ + 2NO3-
what is the correct complet ionic equation Pb(NO3)2 (aq) + 2KI (aq) →PbI2 (s) + 2KNO3(aq)
P4O10
what is the correct formula of a compound that has ten oxygen atoms and four phosphorus atoms
Pb2+ +2I- →PbI2(s)
what is the correct net ionic equation Pb(NO3)2 (aq) + 2KI (aq)→PbI2(s) + 2KNO3(aq)
MgS
what is the formula for an ionic compound made of magnesium and sulfur
163.43 amu
what is the formula mass for diboron tetrachloride
cobalt(II) sulfide
what is the name of CoS
nitrous acid
what is the name of HNO2
sodium oxide
what is the name of the compound whose formula is Na2O
sulfur pentafluoride
what is the name of the molecular compound SF5
hydrobromic acid
what is the proper name for HBr
precipitation
what type of a reaction occurs when a silver nitrate solution is mixed with sodium chloride solution
single displacement
what type of reaction is the generic equation A+BC→AC+B
synthesis/ combination
what type of reaction is the generic equation A+B→AB
double displacement
what type of reaction is the generic equation AB+CD→AD+CB
decomposition
what type of reaction is the generic equation AB→A+B
PbSO4
what would be the formula of the precipitate that forms when Pb(NO3)2 and K2SO4 are mixed
I2S5
what would the formula of diiodine pentasulfide be
Cl- (aq) + Ag+ (aq) → AgCl (s)
when a solution of MgCl2 and one of AgNO3 are mixed the net ionic equation is
False
when elements combine to form compounds their properties only change slightly
4
when the equation 4 NO2 + 2 H2O + O2→ 4 HNO3 is balanced the coefficient of HNO3 is
8
when the equation 8 O2 + 1C5H12→ 5CO2 + 6 H2O is
6
when the equation Ca3N2+ H2O → 3 Ca(OH)2 + 2NH3 is balanced the coefficient of H2O is
3
when the equation N2+ 3H2→2NH3 is balanced the coefficient of hydrogen is
no boiling water is a physical change
when water is heated bubbles form in the water is this evidence of a chemical reaction why
neon
which among the following elements does not exist as a diatomic molecule in nature
Pb2+, NO3-
which ion would not be a spectator ions
K+, NO3-
which ions would not be present in the net ionic equation Pb(NO3)2 + 2KI→ PbI2 + 2KNO3
aluminum sulfide
which of the following compounds is insoluble
4NH3 + 14O2 → 4 NO2 + 6H2O
which of the following equations is not balanced properly
solid formation, emission of light, gas formation, color change
which of the following is evidence that a chemical reaction has occured
the subscripts represent the relative mass of each type of atom in the compound
which of the following statements about chemical formulas is false