DP Chemistry (last assessment 2024)

Question 20N.1.sl.TZ0.4

Date	November 2020	Marks available	[Maximum mark: 1]	Reference code	20N.1.sl.TZ0.4
Level	sl	Paper	1	Time zone	TZ0
Command term	Solve	Question number	4	Adapted from	N/A

[Maximum mark: 1]

20N.1.sl.TZ0.4

Which volume of ethane gas, in ${cm}^{3}$ , will produce $40 {cm}^{3}$ of carbon dioxide gas when mixed with $140 {cm}^{3}$ of oxygen gas, assuming the reaction goes to completion?

$2 C_{2} H_{6} (g) + 7 O_{2} (g) \to 4 {CO}_{2} (g) + 6 H_{2} O (g)$

A. $10$

B. $20$

C. $40$

D. $80$

[1]

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Examiners report

More than 65% of candidates were able to apply coefficient ratios in a stoichiometry question involving only gaseous reactants and products.

Syllabus sections

Core

Core » Topic 1: Stoichiometric relationships » 1.3 Reacting masses and volumes

Core » Topic 1: Stoichiometric relationships

Question 20N.1.sl.TZ0.4

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