More Chemistry Review!
1. Identify the type of chemical reaction listed below:
a) NaOH + KNO3 --> NaNO3 + KOH
b) CH4 + 2 O2 --> CO2 + 2 H2O
c) 2 Fe + 6 NaBr --> 2 FeBr3 + 6 Na
d) CaSO4 + Mg(OH)2 --> Ca(OH)2 + MgSO4
e) NH4OH + HBr --> H2O + NH4Br
f) Pb + O2 --> PbO2
g) Na2CO3 --> Na2O + CO2
2. Correctly write the formula for each material and then balance the equation. Identify the type of chemical reaction.
a) sulfur trioxide and water combine to make sulfuric acid.
b) lead (II) nitrate and sodium iodide react to make lead iodide and sodium nitrate.
c) calcium fluoride and sulfuric acid make calcium sulfate and hydrogen fluoride
d) calcium carbonate will come apart when you heat it to leave calcium oxide and carbon dioxide.
e) sodium hydroxide neutralizes carbonic acid
f) zinc sulfide and oxygen become zinc oxide and sulfur.
g) lithium oxide and water make lithium hydroxide
h) aluminum hydroxide and sulfuric acid neutralize to make water and aluminum sulfate.
i) sulfur burns in oxygen to make sulfur dioxide.
j) barium hydroxide and sulfuric acid make water and barium sulfate.
k) aluminum sulfate and calcium hydroxide become aluminum hydroxide and calcium sulfate.
l) copper metal and silver nitrate react to form silver metal and copper II nitrate.
m) sodium metal and chlorine react to make sodium chloride.
n) calcium phosphate and sulfuric acid make calcium sulfate and phosphoric acid.
o) phosphoric acid plus sodium hydroxide.
p) zinc and copper II sulfate yield zinc sulfate and copper metal
q) sulfuric acid reacts with zinc
r) calcium oxide and aluminum make aluminum oxide and calcium
s) chlorine gas and sodium bromide yield sodium chloride and bromine
3. Identify and explain which element is more reactive.
a) Li or K
b) N or F
c) F or I
d) Be or Ca
Question #2 answers
a). SO3 + H2O H2SO4
SYNTHESIS
b). Pb(NO3)2 + 2NaI àPbI2 + 2NaNO3
DOUBLE DISPLACEMENT (lead II iodide precipitates)
c). CaF2 + H2SO4 àCaSO4 + 2 HF
DOUBLE DISPLACEMENT (calcium sulfate precipitates)
d). CaCO3 àCaO + CO2
DECOMPOSITION
e). 2 NaOH + H2CO3 àNa2CO3 + 2 H2O
DOUBLE DISPLACEMENT OR ACID-BASE NEUTRALIZATION
f). 2 ZnS + O2 à2 ZnO + 2 S
ANIONIC SINGLE DISPLACEMENT
g). Li2O + H2O à2 LiOH
SYNTHESIS
h). 2 Al(OH)3 + 3 H2SO4 à6 H2O + Al2(SO4)3
DOUBLE DISPLACEMENT OR ACID-BASE NEUTRALIZATION
i). S + O2 àSO2
SYNTHESIS
j). Ba(OH)2 + H2SO4 à2 H2O + BaSO4
DOUBLE DISPLACEMENT OR ACID-BASE NEUTRALIZATION
k). Al2(SO4)3 + 3 Ca(OH)2 à2 Al(OH)3 + 3 CaSO4
DOUBLE DISPLACEMENT
l). Cu + 2AgNO3 à2Ag + Cu(NO3)2
CATIONIC SINGLE DISPLACEMENT
m). 2Na + Cl2 à2 NaCl
SYNTHESIS
n). Ca3(PO4)2 + 3 H2SO4 à3 CaSO4 + 2 H3PO4
DOUBLE DISPLACEMENT
o). H3(PO4) + 3 NaOH àNa3PO4 + 3 H2O
DOUBLE DISPLACEMENT (NEUTRALIZATION)
p). Zn + CuSO4 àZnSO4 + Cu
CATIONIC SINGLE DISPLACEMENT
q). H2SO4 + Zn àZnSO4 + H2
CATIONIC SINGLE DISPLACEMENT
r). 3 CaO + 2 Al Al2O3 + 3 Ca
CATIONIC SINGLE DISPLACEMENT
s). Cl2 + 2 NaBr 2 NaCl + Br2
ANIONIC SINGLE DISPLACEMENT