AnswersChemistryWriting and Balancing Chemical Equations

Writing and Balancing Chemical Equations — Quiz Answers

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The compound FeCl sub 3 is made of

A
three molecules of iron chloride.
B
two atoms of iodine, one atom of iron, and one atom of carbon.
C
one atom of iron and three atoms of carbon.
D
one atom of iron and three atoms of chlorine.
2
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Which formula equation represents the burning of sulfur to produce sulfur dioxide?

A
cap s times s plus cap o sub 2 g triangle set over right arrow SO sub 2 g
B
4 Fe sub 2 cap s sub 2 plus 11 cap o sub 2 rightarrow 2 Fe sub 2 cap o sub 3 plus 8 SO sub 2
C
2 SO sub 2 g plus cap o sub 2 g cap v sub 2 cap o sub 5 set over right arrow 2 SO sub 3 g
D
2 cap h sub 2 cap s s plus 3 cap o sub 2 g rightarrow 2 cap h sub 2 cap o l plus 2 SO sub 2 g
3

Which statement best describes the formula equation Cl sub 2 times g plus 2 KBr aq ce bond right arrow 2 KCl aq plus Br sub 2 times l ?

A
Potassium bromine gas reacts with liquid chlorine to form potassium chloride in solution and bromine gas.
B
Bromine gas reacts with a solution of potassium chloride to form potassium bromide and chlorine gas.
C
Chlorine gas reacts with potassium bromide to form potassium chloride in solution and liquid bromine.
D
Carbon iodide reacts with potassium bromide to form potassium carbon iodide and bromine.
4

Which equation has both a liquid and a gas as products?

A
Mg times s plus 2 HCl aq rightarrow cap h sub 2 of g plus MgCl sub 2 times aq
B
2 KClO sub 3 s rightarrow 2 KCl s plus 3 cap o sub 2 g
C
2 Mg s plus cap o sub 2 times g rightarrow 2 MgO s
D
2 HgO s rightarrow 2 Hg l plus cap o sub 2 times g
5

What is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants are in the aqueous or liquid phase?

A
HCl times aq plus NaOH times aq rightarrow NaCl times s plus cap h sub 2 cap o l
B
cap h sub 2 SO sub 4 aq plus 2 NaOH aq rightarrow Na sub 2 SO sub 4 aq plus 2 cap h sub 2 cap o l
C
cap h sub 2 SO sub 4 aq plus Ca OH sub 2 aq rightarrow CaSO sub 4 times aq plus 2 cap h sub 2 cap o l
D
2 cap h sub 3 PO sub 4 aq plus 3 Ca OH sub 2 aq rightarrow Ca sub 3 open paren PO sub 4 close paren s plus 6 cap h sub 2 cap o l
6

Which formula equation shows a reversible reaction?

A
NH sub 4 Cl s left right arrow NH sub 3 times g plus HCl times g
B
CaCO sub 3 rightarrow CaO plus CO sub 2
C
2 Na plus cap f sub 2 rightarrow 2 NaF
D
2 cap h sub 2 cap o sub 2 aq Pt set over right arrow 2 cap h sub 2 cap o l plus cap o sub 2 times g
7

Isopropanol burns in oxygen to yield carbon dioxide, water, and heat. Which word equation best represents this chemical reaction?

A
isopropanol plus oxygen rightarrow carbon dioxide plus water plus heat
B
isopropanol rightarrow carbon dioxide plus water plus oxygen
C
isopropanol plus oxygen plus heat rightarrow carbon dioxide plus water
D
isopropanol rightarrow carbon dioxide plus water plus heat
8

Which word equation shows hydrogen reacting with oxygen to form water?

A
hydrogen plus oxygen ce bond right arrow water
B
hydrogen plus water rightarrow oxygen
C
oxygen plus water ce bond right arrow hydrogen plus water
D
oxygen plus water ce bond right arrow hydrogen
9

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out?

A
Pt set over right arrow
B
2 atm set over right arrow
C
triangle set over right arrow
D
25 times degree C set over right arrow
10

Fluorine gas is placed in contact with calcium metal at high temperatures to produce calcium fluoride powder. What is the formula equation for this reaction?

A
cap f sub 2 of g plus Ca times s rightarrow CaF sub 2 times l
B
cap f sub 2 of g plus Na s triangle set over right arrow NaF sub 2 l
C
cap f sub 2 of l plus Na times s rightarrow NaF sub 2 times s
D
cap f sub 2 of g plus Ca s triangle set over right arrow CaF sub 2 s

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Writing and Balancing Chemical Equations — Quiz…