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Unit 7 Lessons 1 & 2
By Kristina Thibodeaux
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Question 1
1.
Use the following symbolic equation to determine the word equation:
CaCl
2
+ K
2
CO
3
--> KCl + CaCO
3
calcium chloride + potassium carbonide --> potassium chloride + calcium carbonide
calcium chlorate + potassium carbonate --> potassium chlorate + calcium (II) carbonate
calcium dichloride + potassium carbon oxide --> potassium monochloride + calcium carbon oxide
calcium chloride + potassium carbonate --> potassium chloride + calcium carbonate
Question 2
2.
What are the products of a combustion reaction?
CO
2
Unable to determine
CO
O
2
H
2
O
Question 3
3.
2 CoBr
3
+ 3 CaSO
4
--> 3 CaBr
2
+ Co
2
(SO
4
)
3
What are the reactants in the equation above?
CoBr
3
CaBr
2
Co
2
(SO
4
)
3
CaSO
4
Question 4
4.
2 LiCl + Br
2
--> 2 LiBr + Cl
2
Identify the reaction above .
Double Displacement
Combustion
Single Displacement
Synthesis
Decomposition
Question 5
5.
2 NO + O
2
--> 2 NO
2
Identify the reaction above .
Synthesis
Decomposition
Combustion
Single Displacement
Double Displacement
Question 6
6.
Which of the following equations represents the correct phase notations for the following word equation?
"Solid aluminum reacts with aqueous hydrochloric acid to produce solid aluminum chloride and hydrogen gas"
2Al (s) + 6HCl (aq) --> 2AlCl
3
(s) + 3H
2
(g)
Al (l) + HCl (l) --> AlCl (aq) + H (aq)
2Al (s) + 6HCl (l) --> 2AlCl
3
(l) + 3H
2
(g)
Al
2
(s) + 6HCl (aq) --> 2AlCl
3
(aq) + 6H (g)
Question 7
7.
How much reactant was need if 25.6 g of O
2
and 35.7 g of H
2
were produced?
5.05 g
50 g
10.1 g
61.3 g