Chemistry Question

Quiz sommatif 2 Nomenclature and types of reactions
Question 1
Indicate whether each of the following equations represents a synthesis, decomposition, single shift
or double shift reaction
Question 2
Indicate whether each of these equations represents a synthesis, decomposition, single shift,
double shift reaction. Justify your answers
a) 2Al(s) + 3CuC12(aq) —-> 2AlCL3(aq) + 3Cu(s)
b) 2H2(g) + 02(g) —-> 2H20(g)
c) e) 2C7H5N306(S) —-> 3N2(g) + 5H20(g) + 7CO(g) + 7C(s)
d) 3Mg(s) + N2(g) —-> Mg3N2(s)
e) NaCl(aq) + AgN03(aq) —-> AgCl(s) + NaN03(aq)
f) f) 2K20(l) —-> 4K(l) + 02(g)
Question 3
Which halogen can move a single halogen and can itself be moved by two halogens?
Question 4
Predict the products of the following reactions, decide on their types, balance them, and don’t
forget to indicate the states of the reactants and products.
If you predict that there will be no reaction, write “AR”.
1) A piece of sodium is placed in a solution of iron (III) bromide
2) Sodium hydroxide is mixed with sulfuric acid
3) A piece of zinc is placed in water
____ NH3 + ____ H2O 🡪
____ PbSO4 + ____ AgNO3 🡪
____ PBr3 🡪
____ HBr + ____ Fe 🡪
____ AgNO3 🡪
____ Na2CO3 +
____ KI + ____ AgNO3 🡪
____ BaSO4 + ____ MgNO3 🡪
____ Mg2 + ____ Cl2 🡪
HCl 🡪
13) magnesium and aluminium sulphate
14) (NH4)2S(aq) + NaCl(aq) →
Question 5
A company is developing a chemistry set and wants to include materials that can produce water.
Indicate the type of reaction each of these materials will undergo to produce water.
I) LiOH(s)
II) H2S04(aq)
Question 6
Several drops of sodium sulfate solution are added to a water sample to detect possible water
possible water contaminants: sodium nitrate, calcium chloride and lead(II) acetate.
a) Which of these contaminants may be present if a precipitate forms?
b) Write the balanced chemical equation for the reaction involving this contaminant.

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