Preparatory Problems
"Bonding the World with Chemistry"
49th INTERNATIONAL CHEMISTRY OLYMPIAD
Nakhon Pathom, THAILAND
Preparatory problems: 49th IChO, Thailand, 2017 1
,Preface
On behalf of the scientific committee, I am delighted to provide Preparatory Problems for
the 49th International Chemistry Olympiad. The aim of these problems is to facilitate the
preparation of participants. We intended to prepare problems to cover wide range of challenging
topics in modern chemistry that could be solved by applying fundamental chemical principles
covered in high school level along with six topics of advanced difficulty. These advanced topics
are listed explicitly under “Topics of Advanced Difficulty” and their applications are demonstrated
in the tasks. We expect the participants to be familiar with these topics.
The problems listed in this book consisted of 33 theoretical and 5 practical tasks. We hope
you find these tasks useful to prepare for the competition. The official solutions are only available
to the mentors of each country in May 2017. The Preparatory Problems with Solutions will be
published later on our IChO 2017 website. We welcome any comments, corrections or questions
about the problems to .
We also would like to take this opportunity to welcome you to Thailand. The International
Chemistry Olympiad is a venue for scholarly gathering and certainly will keep the participants
intellectually intrigued and inspired. We hope you will enjoy not only a challenging chemistry
competition but also great and memorable experiences of Thai cultures. We look forward to seeing
you in Thailand.
Acknowledgements
I would like to express my deep gratitude to all the authors for their dedication and effort
in contributing to the Preparatory Problems as well as the members of the International Steering
Committee for valuable comments and suggestions. I also highly appreciate The Institute for the
Promotion of Teaching Science and Technology (IPST) in collaboration with the Faculty of
Science, Mahidol University, for facilitating meetings for members of Scientific Committee.
Piniti Ratananukul
Chair–Scientific Committee
Bangkok, 31 January 2017
Preparatory problems: 49th IChO, Thailand, 2017 2
,Table of Contents
Page
Task Authors 4
Constants and Formulae 5
Periodic Table 6
Characteristic 1H and 13C NMR Chemical Shifts 7
IR Absorption Frequencies Table 8
Fields of Advanced Difficulty 10
Task lists 11
Theoretical Tasks 13
Practical Tasks 45
Appendices 58
Preparatory problems: 49th IChO, Thailand, 2017 3
, Task Authors
Chair of Scientific Committee
Piniti Ratananukul POSN
Advisory Committee
Orn-anong Arqueropanyo Chiang Mai University
Laddawan Pdungsap Mahidol University
Yenchai Somvichian POSN
Sunanta Vibuljan Mahidol University
Prapin Wilairat Mahidol University
Contributing Authors
Pongsaton Amornpitoksuk Prince of Songkla University
Radchada Buntem Silpakorn University
Chutima Jiarpinitnun Mahidol University
Kritsana Jitmanee Chiang Mai University
Tinakorn Kanyanee Chiang Mai University
Duangjai Nacapricha Mahidol University
Suwat Nanan Khon Kaen University
Paiboon Ngernmeesri Kasetsart University
Pasit Pakawatpanurut Mahidol University
Shuleewan Rajviroongit Mahidol University
Nuanlaor Ratanawimarnwong Srinakharinwirot University
Yupaporn Sameenoi Burapha University
Anchalee Samphao Ubon Ratchathani University
Preeyanuch Sangtrirutnugul Mahidol University
Atitaya Siripinyanond Mahidol University
Ekasith Somsook Mahidol University
Panida Surawatanawong Mahidol University
Akapong Suwattanamala Burapha University
Jonggol Tantirungrotechai Mahidol University
Yuthana Tantirungrotechai Thammasat University
Saowapak Teerasong King Mongkut's Institute of Technology,
Ladkrabang
Tienthong Thongpanchang Mahidol University
Charnsak Thongsornkleeb Chulabhorn Graduate Institute
Preparatory problems: 49th IChO, Thailand, 2017 4
"Bonding the World with Chemistry"
49th INTERNATIONAL CHEMISTRY OLYMPIAD
Nakhon Pathom, THAILAND
Preparatory problems: 49th IChO, Thailand, 2017 1
,Preface
On behalf of the scientific committee, I am delighted to provide Preparatory Problems for
the 49th International Chemistry Olympiad. The aim of these problems is to facilitate the
preparation of participants. We intended to prepare problems to cover wide range of challenging
topics in modern chemistry that could be solved by applying fundamental chemical principles
covered in high school level along with six topics of advanced difficulty. These advanced topics
are listed explicitly under “Topics of Advanced Difficulty” and their applications are demonstrated
in the tasks. We expect the participants to be familiar with these topics.
The problems listed in this book consisted of 33 theoretical and 5 practical tasks. We hope
you find these tasks useful to prepare for the competition. The official solutions are only available
to the mentors of each country in May 2017. The Preparatory Problems with Solutions will be
published later on our IChO 2017 website. We welcome any comments, corrections or questions
about the problems to .
We also would like to take this opportunity to welcome you to Thailand. The International
Chemistry Olympiad is a venue for scholarly gathering and certainly will keep the participants
intellectually intrigued and inspired. We hope you will enjoy not only a challenging chemistry
competition but also great and memorable experiences of Thai cultures. We look forward to seeing
you in Thailand.
Acknowledgements
I would like to express my deep gratitude to all the authors for their dedication and effort
in contributing to the Preparatory Problems as well as the members of the International Steering
Committee for valuable comments and suggestions. I also highly appreciate The Institute for the
Promotion of Teaching Science and Technology (IPST) in collaboration with the Faculty of
Science, Mahidol University, for facilitating meetings for members of Scientific Committee.
Piniti Ratananukul
Chair–Scientific Committee
Bangkok, 31 January 2017
Preparatory problems: 49th IChO, Thailand, 2017 2
,Table of Contents
Page
Task Authors 4
Constants and Formulae 5
Periodic Table 6
Characteristic 1H and 13C NMR Chemical Shifts 7
IR Absorption Frequencies Table 8
Fields of Advanced Difficulty 10
Task lists 11
Theoretical Tasks 13
Practical Tasks 45
Appendices 58
Preparatory problems: 49th IChO, Thailand, 2017 3
, Task Authors
Chair of Scientific Committee
Piniti Ratananukul POSN
Advisory Committee
Orn-anong Arqueropanyo Chiang Mai University
Laddawan Pdungsap Mahidol University
Yenchai Somvichian POSN
Sunanta Vibuljan Mahidol University
Prapin Wilairat Mahidol University
Contributing Authors
Pongsaton Amornpitoksuk Prince of Songkla University
Radchada Buntem Silpakorn University
Chutima Jiarpinitnun Mahidol University
Kritsana Jitmanee Chiang Mai University
Tinakorn Kanyanee Chiang Mai University
Duangjai Nacapricha Mahidol University
Suwat Nanan Khon Kaen University
Paiboon Ngernmeesri Kasetsart University
Pasit Pakawatpanurut Mahidol University
Shuleewan Rajviroongit Mahidol University
Nuanlaor Ratanawimarnwong Srinakharinwirot University
Yupaporn Sameenoi Burapha University
Anchalee Samphao Ubon Ratchathani University
Preeyanuch Sangtrirutnugul Mahidol University
Atitaya Siripinyanond Mahidol University
Ekasith Somsook Mahidol University
Panida Surawatanawong Mahidol University
Akapong Suwattanamala Burapha University
Jonggol Tantirungrotechai Mahidol University
Yuthana Tantirungrotechai Thammasat University
Saowapak Teerasong King Mongkut's Institute of Technology,
Ladkrabang
Tienthong Thongpanchang Mahidol University
Charnsak Thongsornkleeb Chulabhorn Graduate Institute
Preparatory problems: 49th IChO, Thailand, 2017 4
