DP Chemistry (last assessment 2024)

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Question 18N.3.sl.TZ0.2b.ii

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.3.sl.TZ0.2b.ii
Level sl Paper 3 Time zone TZ0
Command term Formulate Question number b.ii Adapted from N/A
b.ii.
[Maximum mark: 1]
18N.3.sl.TZ0.2b.ii

One way of classifying materials is based on the type of bonding present.

(b.ii)

In an incomplete combustion of the polyvinyl chloride, PVC, it was found that hydrogen chloride, carbon monoxide, carbon dioxide, and water vapour were released.

Formulate an equation for this reaction using the formula of the PVC repeating unit.

[1]

Markscheme

CH2CHCl (s) + 2O2 (g) → HCl (g) + CO (g) + CO2 (g) + H2O (g)

OR

CH2CHCl (s) + O2 (g) → HCl (g) + 2CO (g) + H2O (g) AND 2CO (g) + O2 (g) → CO2 (g) ✔

 

Accept any correctly balanced equation that includes the products specified.

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