Write down the TYPE of ADDITION reaction represented by:
4.1.1 Reaction 1
4.1.2 Reaction 2
4.2 Use STRUCTURAL FORMULAE to write down a balanced chemical equation for Reaction 3 - NSC Technical Sciences - Question 4 - 2023 - Paper 2
Question 4
Write down the TYPE of ADDITION reaction represented by:
4.1.1 Reaction 1
4.1.2 Reaction 2
4.2 Use STRUCTURAL FORMULAE to write down a balanced chemical equation ... show full transcript
Worked Solution & Example Answer:Write down the TYPE of ADDITION reaction represented by:
4.1.1 Reaction 1
4.1.2 Reaction 2
4.2 Use STRUCTURAL FORMULAE to write down a balanced chemical equation for Reaction 3 - NSC Technical Sciences - Question 4 - 2023 - Paper 2
Step 1
4.1.1 Reaction 1
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Answer
The type of addition reaction represented by Reaction 1 is Hydrobromination (Hydrohalogenation).
Step 2
4.1.2 Reaction 2
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Answer
The type of addition reaction represented by Reaction 2 is Hydrogenation.
Step 3
4.2 Use STRUCTURAL FORMULAE
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Answer
The balanced chemical equation for Reaction 3 using structural formulae is:
C3H8 + H2O ⇌ C3H8O
Where Propan-2-ol is formed from Propane.
Step 4
4.3 Write down TWO reaction conditions for Reaction 1
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Answer
Two conditions for Reaction 1 are:
No water as a solvent.
Unreactive solvent.
Step 5
4.4.1 Write down the NAME of the reaction
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Answer
The reaction referred to in the statement is Combustion.
Step 6
4.4.2 Use MOLECULAR FORMULAE
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Answer
The balanced equation for the combustion of ethyne (C2H2) is:
2C2H2 + 5O2 → 4CO2 + 2H2O (+ energy)
This equation is balanced in terms of the number of atoms on each side.
Step 7
4.5.1 Polymerisation
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Answer
Polymerisation is a chemical reaction in which monomer molecules join to form a polymer.
Step 8
4.5.2 Macromolecule
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A macromolecule is a molecule consisting of a large number of atoms.
Step 9
4.6.1 Draw a symbol of a p-n junction diode
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The symbol of a p-n junction diode consists of an arrow pointing towards a vertical line. The arrow represents the p-type material (anode), while the line represents the n-type material (cathode).
