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CHEMISTRY, M3 EQ-Bank 18

A student heats sodium metal, copper carbonate and propane gas individually with a Bunsen burner. All of the substances react but only two of the substances react with the oxygen in the air.

Write a balanced chemical equation for each of the reactions that occurred.   (3 marks)

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Combustion of sodium metal: 

Combustion of propane gas: 

Decomposition of copper carbonate: 

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Combustion of sodium metal: 

Combustion of propane gas: 

Decomposition of copper carbonate: 

→ The last reaction is endothermic and so requires the heat of the Bunsen burner to proceed where as the first two require the heat of the Bunsen burner to overcome their activation energies.

CHEMISTRY, M3 EQ-Bank 17

A student tested how soluble silver salts are by reacting a 0.1 mol L silver nitrate solution with 0.1 mol L solutions of calcium hydroxide, calcium chloride, and calcium sulfate. The results are shown below:

  1. Write a balanced chemical equation for the reaction with calcium chloride.   (2 marks)
  1. Name the white precipitate.   (1 mark)
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a.    

b.    The white precipitate is → silver chloride.

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a.    
 

b.    The white precipitate is → silver chloride.

CHEMISTRY, M3 EQ-Bank 29v4

Write balanced chemical equations for each of the following reactions (states of matter are not required).

  1. The reaction between aluminium and nitric acid.   (1 mark)
  2. The decomposition of mercury (II) oxide.    (1 mark)
  3. The complete combustion of pentane () with excess oxygen.   (1 mark)
  4. The reaction between magnesium hydroxide and acetic acid ().   (1 mark)
  5. The reaction between calcium carbonate and hydrochloric acid.   (1 mark)
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a.   

b.   

c.   

d.   

e.   

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a.    Active metal and acid

b.    Decomposition 

c.    Combustion

d.    Acid-base

e.    Acid-carbonate

CHEMISTRY, M3 EQ-Bank 29v3

Write balanced chemical equations for each of the following reactions (states of matter are not required).

  1. The reaction between iron and sulfuric acid.   (1 mark)
  2. The decomposition of sodium carbonate.   (1 mark)
  3. The incomplete combustion of propene () with a limited amount of oxygen.   (1 mark)
  4. The reaction between calcium hydroxide and phosphoric acid.   (1 mark)
  5. The reaction between sodium carbonate and nitric acid.   (1 mark) 
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a.   

b.   

c.   

d.   

e.   

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a.    Active metal and acid

b.    Decomposition

c.   Combustion

d.    Acid-Base

e.    Acid-Carbonate

CHEMISTRY, M3 EQ-Bank 16

Write balanced chemical equations for each of the following reactions (states of matter are not required).

  1. The reaction between lithium hydroxide and hydrochloric acid.   (1 mark)

  2. The reaction between potassium carbonate and hydrochloric acid.   (1 mark)

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a.   

b.   

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a.    Acid-Base

b.    Acid-carbonate

CHEMISTRY, M3 EQ-Bank 15

Write balanced chemical equations for each of the following reactions (states of matter are not required).

  1. The reaction between zinc and sulfuric acid.   (1 mark)

  2. The decomposition of calcium carbonate.   (1 mark)

  3. The incomplete combustion of ethane with a limited amount of oxygen.   (1 mark)

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a.   

b.   

c.   

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a.    Active metal and acid

b.    Decomposition

c.    Combustion

CHEMISTRY, M3 EQ-Bank 14

Write balanced chemical equations for each of the following reactions (states of matter are not required).

  1. The reaction between potassium hydroxide and sulfuric acid.   (1 mark)
  2. The reaction between sodium bicarbonate and acetic acid .   (1 mark)
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a.   

b.   

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a.   Acid-base 

b.   Acid-carbonate 

CHEMISTRY, M3 EQ-Bank 13

Write balanced chemical equations for each of the following reactions (states of matter are not required).

  1. The reaction between magnesium and hydrochloric acid.   (1 mark)

  2. The decomposition of ammonia.   (1 mark)

  3. The incomplete combustion of butane () with a limited amount of oxygen.   (1 mark)

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a.   

b.   

c.   

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a.   Reaction between active metal and acid

b.   Decomposition

c.   Combustion

CHEMISTRY, M3 EQ-Bank 9

Two moles of butane were reacted with 224 grams of oxygen .

  1. Write the balanced equation for this reaction.   (3 marks)

  2. Determine the mass, in grams, of produced by this reaction.   (1 mark)

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i.   

ii.   

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i.    Complete combustion equation:

   

→ Two moles of butane require 10 moles of oxygen to fully combust. 

→

→ Oxygen is limiting reagent and butane will undergo incomplete combustion according to the following balanced equation:

   

 

ii.    Using the equation in part (i), 2 moles of will be produced

CHEMISTRY, M3 EQ-Bank 6

Three unknown metals are reacted with dilute and the following observations are made:  

You are told that the metals in question are Magnesium, Platinum and Zinc.

  1. Explain which of the above metals correspond to , and , giving reasons for your answer.   (3 marks) 

  2. Describe the type of reaction between and metal .   (1 mark)

  3. Provide one balanced chemical equation between and either metal or metal .   (1 mark)

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i.     → The metals , and differ by their relative reactivity.

→ Magnesium is the most reactive as it is an alkali earth metal (Metal ).

→ Zinc and Platinum are both less reactive than magnesium. Zinc however exists higher on the reactivity series of metals than Platinum which is the least reactive of the three metals.

→ Therefore, metal is zinc and metal is platinum. 
 

ii.   → A single displacement reaction.
 

iii.   Include one of the following:

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i.     → The metals , and differ by their relative reactivity.

→ Magnesium is the most reactive as it is an alkali earth metal (Metal ).

→ Zinc and Platinum are both less reactive than magnesium. Zinc however exists higher on the reactivity series of metals than Platinum which is the least reactive of the three metals.

→ Therefore, metal is zinc and metal is platinum. 
 

ii.   → A single displacement reaction.
 

iii.   Include one of the following: