Welcome to the Quiz!

This quiz contains 16 questions from a mix of 1 subtopics.

Add state symbols to the following equation representing reaction between hydrochloric acid and sodium hydroxide solution.

HCl() + NaOH() ➔ NaCl() + H2O()

aq
aq
aq
l

0

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4

Add state symbols to the following equation representing the combustion of magnesium ribbon.

2Mg() + O2() ➔ 2MgO()

s
g
s

0

/

3

What is the correct ionic equation for the reaction between hydrochloric acid and potassium hydroxide?

H+ + Cl- + K+ + OH- ➔ K+ + Cl- + H2O

H+ + Cl- + K+ + OH- ➔ KCl + H2O

H+ + OH- ➔ H2O

0

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1

The following precipitation reaction takes place to produce the yellow precipitate lead(II) iodide, PbI2: 

Pb(NO3)2(aq) + 2KI(aq) ➔ PbI2(s) + 2KNO3(aq)

What is the correct ionic equation for this reaction?

Pb2+(aq) + 2I-(aq) ➔ PbI2(s)

Pb2+(aq) + I2-(aq) ➔ PbI2(s)

Pb2+(aq) + I-(aq) ➔ PbI2(s)

Pb(aq) + I2(aq) ➔ PbI2(s)

0

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1

Balance the following equation:

Al2O3 + 9Fe ➔ Fe3O4 + Al

4
3
8

0

/

3

Balance the following equation:

KClO3 ➔ 2KCl + O2

2
3

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2

What mass of hydrogen is formed when 4.00 g of magnesium reacts with excess sulfuric acid?

Mg + H2SO4 ➔ MgSO4 + H2

Give your answer to 3 significant figures.

0.329

g

g

0

/

1

What mass of potassium reacts with 8.00 g of oxygen?

4K + O2 ➔ 2K2O

39.1

g

g

0

/

1

What mass of chlorine reacts with 32.4 g of aluminium?

2Al + 3Cl2 ➔ 2AlCl3

127.8

g

g

0

/

1

What mass of carbon dioxide is made when 21.6 g of pentane (C5H12) burns in oxygen?

C5H12 + 8O2 ➔ 5CO2 + 6H2O

66

g

g

0

/

1

What mass of nitrogen would react with 15.0 g of hydrogen?

N2 + 3H2 ➔ 2NH3

70

g

g

0

/

1

What does it mean for a reactant to be a limiting reactant?

it all reacts and limits how much product can be formed

it does not all react, and has no affect on the amount of product formed

0

/

1

If 4 g of calcium reacts with oxygen from the air, which is most likely to be a limiting reactant, the calcium or the oxygen? 

calcium 

oxygen

0

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1

Calcium oxide and water react in a 1: 1 ratio:

CaO + H2O ➔ Ca(OH)2

In a reaction between 3 moles of calcium oxide and 7 moles of water, what is the limiting reactant?

water

calcium oxide

0

/

1

What does it mean for a reactant to be in excess?

it does not all react, and has no affect on the amount of product formed

it all reacts and limits how much product can be formed 

0

/

1

Sulfur dioxide and oxygen react together in a 2:1 ratio:

2SO2 + O2 ➔ 2SO3

In a reaction between 1.8 moles of sulfur dioxide, and 1 mole of oxygen, which reactant will be in excess?

oxygen

sulfur dioxide 

0

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1