NZQA registered unit standard
8456 version 5
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Title
Demonstrate knowledge of, and synthesise, aromatic compounds
Level
5
Credits
3
Purpose
People credited with this unit standard are able to: describe
aromatic compounds; describe the mechanism of electrophilic
aromatic substitution; carry out the synthesis of an aromatic
compound by electrophilic substitution; predict the orientation in
disubstituted aromatic compounds; and describe multi-step
organic transformations.
Classification
Science > Chemistry
Available grade
Achieved
Explanatory notes
1
All work must be carried out in accordance with the quality management system,
documented protocol system or Standard Operating Procedures (SOP) typically
acceptable in a commercial or research laboratory.
2
Health and Safety practices must conform to Australian/New Zealand Standard
AS/NZS 2243:2006 Set – Safety in Laboratories Parts 1, 2, 3, 7, and 10 available at
http://www.standards.co.nz and http://infostore.saiglobal.com/store.
3
Legislation applicable to this unit standard includes:
Health and Safety in Employment Act 1992;
Hazardous Substances and New Organisms Act 1996.
4
Glossary
Laboratory procedures refer to documented systems or processes of operation,
which may be found in a SOP manual, quality management system or protocol
system documentation. These procedures are external and/or internal laboratory
requirements governing laboratory work.
Outcomes and evidence requirements
Outcome 1
Describe aromatic compounds.
Evidence requirements
1.1
Names and all classifications of aromatic compounds are identified in
accordance with scientific nomenclature.
NZQA National Qualifications Services
SSB Code 130301
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
1.2
8456 version 5
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Aromaticity is described in terms of the structural requirements.
Range
benzene, polycyclic, benzenoid, heterocyclic.
Outcome 2
Describe the mechanism of electrophilic aromatic substitution.
Range
may include – Friedel-Crafts alkylation and acylation, nitration, halogenation,
sulfonation.
Evidence requirements
2.1
Mechanistic pathways are described in relation to the electrophilic aromatic
substitution reaction.
Outcome 3
Carry out the synthesis of an aromatic compound by electrophilic substitution.
Evidence requirements
3.1
The aromatic compound is synthesised by electrophilic substitution, purified,
and identified as the required product in accordance with laboratory procedures.
Outcome 4
Predict the orientation in disubstituted aromatic compounds.
Range
nitration, halogenation, alkylation.
Evidence requirements
4.1
Substituent groups are identified in terms of activating or deactivating.
4.2
Substituent groups are identified in terms of ortho-para or meta orientation.
Outcome 5
Describe multi-step organic transformations.
Evidence requirements
5.1
The synthesis of aromatic organic compounds by two or more steps is
described and justified in terms of the required product in accordance with
laboratory procedures.
Planned review date
31 December 2017
NZQA National Qualifications Services
SSB Code 130301
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
8456 version 5
Page 3 of 3
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
22 December 1996
31 December 2014
Revision
2
19 February 1998
31 December 2014
Review
3
23 November 1999
31 December 2014
Review
4
18 June 2010
N/A
Rollover
5
27 January 2015
N/A
Consent and Moderation Requirements (CMR) reference
0152
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact NZQA National Qualifications Services nqs@nzqa.govt.nz if you wish to
suggest changes to the content of this unit standard.
NZQA National Qualifications Services
SSB Code 130301
 New Zealand Qualifications Authority 2016