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I'm not an expert teacher or lecturer of chemistry. I was only a student from SMA NEGERI 15 SURABAYA who had been one of the Bronze Medalist Participants of Olimpiade Sains Nasional X (2011) of Chemistry In Manado, North Sulawesi, 11 - 16 September 2011 and graduated in 2012. Now, I'm studying at Universitas Airlangga in Surabaya, Indonesia. I do love chemistry and I would like to help them who had difficulties in studying chemistry. That's why, please understand me if you found some misconcepts in my entries. Suggestions are always necessary in order to develop this blog. And I'm sorry because my English isn't so well.

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Saturday, May 05, 2012

Gambaran Simulasi OSN Kimia 2012 On - Line

Identifikasi Senyawa Organik (23 Poin)

Suatu senyawa dianalisis menggunakan 1H - NMR dan memberikan data sebagai berikut:

1. Sebuah puncak triplet pada geseran di daerah 1,24 ppm dan memiliki nilai integrasi = 3
2. Sebuah singlet yang tercipta akibat 5 ekivalen pada geseran 2,35 ppm dan memiliki nilai integrasi = 15
3. Sebuah puncak kuartet pada geseran 2,59 ppm dan memiliki nilai integrasi = 2

NMR yang digunakan berkualitas buruk sehingga terdapat geseran yang tidak akurat. Senyawa tersebut memiliki 1 cincin aromatis dan memiliki RM = C13H20.

Pertanyaan:
1. Interpretasikan hasil 1H-NMR diatas. (10 Poin)
2. Berikan nama IUPAC untuk senyawa C13H20 diatas. (10 Poin)
3. Jelaskan geseran tidak akurat mana yang tidak terbaca oleh spektroskop tersebut. (3 Poin)


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