AnswersIA-Chemistry A Survey of Chemistry AWriting and Balancing Chemical Equations

Writing and Balancing Chemical Equations Answers

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Which of the following is the correct word equation for the reaction described below? Methanol (CH3OH) forms when carbon monoxide reacts with hydrogen.

A
carbon monoxide + methanol → hydrogen
B
methanol → carbon monoxide + hydrogen
C
carbon monoxide + hydrogen → methanol
D
methanol + hydrogen → carbon dioxide
2
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Which of the following is the correct word equation for the reaction described below? Mercury(II) oxide breaks down when it is heated to form oxygen gas and liquid mercury.

A
oxygen gas + mercury → mercury(II) oxide
B
mercury(II) oxide + oxygen → mercury
C
mercury → mercury(II) oxide + oxygen
D
mercury(II) oxide → oxygen + mercury
3

Which of the following is the correct word equation for the reaction described below? When sulfuric acid reacts with sodium hydroxide, sodium sulfate and water form.

A
sulfuric acid + sodium hydroxide → sodium sulfate + water
B
sulfuric acid → sodium hydroxide + sodium sulfate + water
C
sodium sulfate + water → sulfuric acid + sodium hydroxide
D
sodium sulfate + sulfuric acid → sodium hydroxide + water
4

What element is the catalyst in the reaction above?

Question illustration
A
H
B
N
C
O
D
Pt
5

Barium chlorate (Ba(ClO3)2) breaks down to form barium chloride and oxygen. What is the balanced equation for this reaction?

A
Ba(ClO3)2(s) BaCl2(s) + O2(g)
B
Ba(ClO3)2(s) BaCl2(s) + 3O2(g)
C
2Ba(ClO3)2(s) BaCl(s) + 6O2(g)
D
Ba(ClO)2(s) BaCl2(s) + O2(g)
6

Carbon dioxide and water are produced when pentane (C5H12) reacts with oxygen. What is the balanced equation for this reaction?

A
C5H12(g) + O2(g) CO2(g) + H2O(g)
Option A
B
C5H12(g) + O2(g) 5CO2(g) + H2O(g)
Option B
C
C5H12(g) +8O2(g) 5CO2(g) + 6H2O(g)
Option C
D
5CO2(g) + 6H2O(g) C5H12(g) + 8O2(g)
Option D

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