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Practice Test
: Chemical Equation Predictions
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KH + H2O -->
Common ligands (Lewis Bases)
H2S
Sulfite ions or SO2
MnO4- in neutral or basic solution
MnO4- in acidic solution
NH3
Becomes a gas. Any sulfide (salt of S2-) plus any acid form H2S (g) and a salt
Any ammonium salt (salt of NH4+) plus any soluble strong hydroxide react upon heating to form NH3(g), H2O and a salt
Mn2+
MnO2 (s)
Sulfate ions
H2 + KOH: Metallic hydrides plus water produce hydrogen gas and metallic hydroxides
NH3, CN-, OH-, SCN-
Short Answer
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CO2
MnO2 in acidic solution
Metallous ions (lower oxidation #)
Free halogens, concentrated basic solution
SO2
Multiple Choice
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Metallic ions (higher oxidation #)
Fe, Co, Ni, Cr, Cu, Zn, Ag, Al
Mn2+
metallous ions (lower oxidation #)
Bases (Metallic hydroxides) KOH
O2, H2O
Halide ions
O2, H2O
Becomes a gas. Any sulfide (salt of S2-) plus any acid form H2S (g) and a salt
Free halogen
Any Carbonate (salt of CO3 2-) plus any acid form CO2 (g), H2O and a Salt
CO2
Cr2O7 2- in acidic solution
Cr3+
Any ammonium salt (salt of NH4+) plus any soluble strong hydroxide react upon heating to form NH3(g), H2O and a salt
Nitrate ions
Free halogen
Bases (Metallic hydroxides) KOH
C2O4 2-
Halate ions
CO2
Bases (Metallic hydroxides) KOH
Nitrate ions
Nitrite ions
Bases (Metallic hydroxides) KOH
NH3, CN-, OH-, SCN-
Nitrate ions
Halate ions
True or False
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Soluble metallic oxides (K2O) + H2O -->
Bases (Metallic hydroxides) KOH
True
False
Free halogens
Halide ions
True
False
Free metals
NH3, CN-, OH-, SCN-
True
False
HNO3 concentrated
Metallic ions (higher oxidation #)
True
False
Common complex ion metals (Lewis Acids)
Fe, Co, Ni, Cr, Cu, Zn, Ag, Al
True
False
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Practice Test: Chemical Equation Predictions