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Unit 7 Level 1 (A) Review
By Kristina Thibodeaux
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Last updated 2 months ago
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Question 1
1.
When the following equation is balanced, what is the coefficient for HCl?
__Mg + __HCl → __MgCl
2
+ __H
2
2
1
4
3
6
Question 2
2.
__ NaBr + __CaF
2
→ __NaF + __CaBr
2
2 NaBr + 1 CaF
2
→ 1 NaF + 2 CaBr
2
2 NaBr + 2 CaF
2
→ 2 NaF + 2 CaBr
2
NaBr + CaF
2
→ NaF + CaBr
2
2 NaBr + 1 CaF
2
→ 2 NaF + 1 CaBr
2
Question 3
3.
Given the following combustion reaction, after balancing the equation, what is the sum of the coefficients of the reactants and products?
__C
2
H
6
+ __O
2
→ __CO
2
+ __H
2
O
15
17
19
21
23
Question 4
4.
Use the following symbolic equation to determine the word equation:
Cu
2
SO
4
+ Sr(C
2
H
3
O
2
)
2
→ CuC
2
H
3
O
2
+ SrSO
4
Copper (II) acetate + strontium sulfate → Copper (II) sulfate + strontium acetate
Copper (II) sulfate + strontium acetate → Copper (II) strontium + acetate sulfate
Copper (I) sulfate + strontium acetate → Copper (I) acetate + strontium sulfate
Copper (I) sulfate + strontium acetate → Copper (I) strontium + acetate sulfate
Question 5
5.
Which of the following reactions is a combination (synthesis) reaction?
AgNO
3(
aq) + HCl(aq) → AgCl(s) + HNO
3
(aq)
Na
2
O(s) + CO
2
(g) → Na
2
CO
3
(s)
2H
2
O(l) → 2H
2
(g) + O
2
(g)
C
3
H
8
(g) + 5O
2
(g) → 3CO
2
(g) + 4H
2
O(l)
KOH(aq) + HCl(aq) → KCl(aq) + H
2
O(l)
Question 6
6.
From the given balanced reactants, predict the correctly balanced product.
3 Na + FeBr
3
→
3 NaBr + Fe
3 NaFe + Br
2
NaBr
3
+ Fe
NaBr + Fe
Question 7
7.
What is the missing product for the single replacement reaction?
2 Al + 3 Pb(NO
3
)
2
→ 2 Al(NO
3
)
3
+ ??
Pb
2
Pb
3 Pb
Pb
3