**This article is written by JC A level H2 / H1 Chemistry tutor - Mr Chong**
page was last updated on 11 Dec 2017]
Hi JC H1/H2 students and international visitors,
Welcome to my blog.
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Introduction 2015 Cambridge exam papers commentsBiochemistry
mechanism in organic chemistryOrganic
chemistry Group 17 (Group VII)
chemistrySome topics to
take note ofEnergeticsInformation for
those aiming for a distinction in H2 chemistry in the year 2017Chemical BondingExam revisionHow to tackle
organic chemistryOptional Topics
This blog may help JC (Junior College) students in Singapore to cope with the
Cambridge-Singapore GCE A level (H2) assessment. Organic Chem occupies a
distinctive and important position in the Singapore Chem syllabus.
Thank you for your continued support of my blog. I am honored to serve you. You
[Brief GCE A level H2 Chemistry tuition notes by Mr Chong, chemistry tutor]
Part One (Part Two is also found on the sidebar)
The notes found on this post are grossly inadequate for 2015 and beyond syllabus. So be forewarned. Students are advised to grasp the basics, then consult a university general chemistry or inorganic chemistry textbook.
** The toughest questions can be found from this chapter, which many teachers rush through due to insufficient time. Much reading is required.
Please note that the color spectrum and its related frequencies, wavelength, crystal field theory, Kstab are not discussed in these notes. You may want to study these concepts as this topic are highly important.
My notes are incomplete; I hope to improve on this post as this has turned out to be a popular post.
1(a) A and B have molecular formula C8H10. When A and B are treated with hot concentrated potassium manganate(VII), A forms C7H6O2 while B forms C8H6O4. B reacts with thionyl chloride, SOCl2 to form C and C reacts with methanol, CH3OH in the presence of a catalyst to form D, C10H10O4. Deduce the formula of A to D. 
(b)(i) Draw the structural formulae of three alcohols with the molecular formula C5H12O. Label your structures E, F and G. 
(ii) Label the chiral carbons on E to G with an asterisk on each carbon. 
(iii) E, F and G are treated with an excess of acidified potassium dichromate(VI). E has no reaction with the reagent while F and G gave different products. Suggest simple chemical tests to identify the functional group on each of the products of F and G. Write chemical equations of all the reactions. 
(iv) F is treated with PCl3 then with NaCN. After that, it is treated with LiAlH4 to give H. Draw the structural formula of H.