Edrolo – – Module 5 - Progress check 1 PDF

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HSC Edrolo Progress Checks - Module 5 Chemistry...

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28/09/2021, 11:44

Edrolo – – Module 5 - Progress check 1

CHEMISTRY - YEAR 12 [2021, NSW] Module 5 - Progress check 1

YOUR NAME: Jelitta Scaria

STRUCTURE OF EXAM

Section A - Multiple Choice

4 questions

4 marks

Section B - Short Answer

4 questions

9 marks

13 marks

WHEN YOU FINISH Get your marks, and view solution videos that explain the answer to each question at:

edrolo.com.au/e6579

https://edrolo.com.au/exams/6579/print/

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28/09/2021, 11:44

Edrolo – – Module 5 - Progress check 1

SECTION A – MULTIPLE CHOICE

Question 1(1 mark) The image below is a dewar, or vacuum flask, sometimes known commercially as a thermos.

Identify the type of system that the dewar typically represents. A

Open system

B

Closed system

C

Isolated system

D

A partially closed system

Question 2(1 mark) The completed combustion of magnesium in excess oxygen could best be described as: A

a reaction moving towards a dynamic equilibrium.

B

a reaction at dynamic equilibrium.

C

a reaction moving towards a static equilibrium.

D

a reaction at static equilibrium.

Question 3(1 mark) Which of the following set of conditions describes a system that will become a system at dynamic equilibrium? A

Reaction reaches completion.

B

Proceeds in both directions until the reaction.

C

Proceeds in both directions and never reaches completion.

D

Proceed unidirectionally and never reaches completion.

Question 4(1 mark) Irreversible reactions: A

proceed unidirectionally and move towards completion.

B

proceed bidirectionally and move towards completion.

C

proceed unidirectionally and never move towards completion.

D

proceed bidirectionally and never move towards completion.

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Edrolo – – Module 5 - Progress check 1

SECTION B – SHORT ANSWER

Question 1 State the relationship between activation energy and reversible or irreversible reactions.

Question 2

1 mark

2 marks

Outline the conditions for a reaction to occur according to collision theory.

Question 3

3 marks

Describe a NAMED example of a non-equilibrium system with respect to it’s energetic nature and equilibrium status.

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Edrolo – – Module 5 - Progress check 1

3 marks Question 4 Mathematically determine the equilibrium nature of the reaction below. Reaction occurs at standard conditions (298.15 K). H

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2( g)

+

1 O ↔ / → H2O l 2 2( g ) ()

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