JPJC 2026 Intro to Organic Chemistry and Isomerism Assignment

2026 JPJC JC1 H2 Chemistry (9476) 1 [Turn Over JURONG PIONEER JUNIOR COLLEGE 2026 JC1 H2 Chemistry (9476) Topical Assignment Topic 8: Introduction to Organic Chemistry and Isomerism Name : __________________________________________ 10 Class : 26S ___ Date : ____________ Duration : 15 minutes 1 Citronellol and compound X are two organic compounds that are found in some perfumes and scents of flowers. C C C C C C C CH3 CH3H H H H H CH3 H H H OH H H citronellol C C C C C C C CH2OH CH3CH3 H H H H H H H H H H H geraniol 12 (a) Compound X is a constitutional isomer of citronellol. Explain what is meant by constitutional isomerism. ……………………………………………………………………………………………………. ……………………………………………………………………………………………………. [1] (b) Name the functional groups present in both citronellol and compound X. ……………………………………………………………………………………………………. [1] (c) Draw the skeletal structure of citronellol. [1] (d) State the types of hybridisation and sketch the shapes of the hybrid orbitals of carbon atom C−1 and C−2 of compound X Atom Type of hybridisation Shape of hybrid orbitals C−1 C−2 [3] compound X

2026 JPJC JC2 H2 Chemistry (9476) 2 (e) Both citronellol and compound X exhibit stereoisomerism. State the type of stereoisomerism exhibited by each compound and draw appropriate diagrams to illustrate the stereoisomerism exhibited. Type of stereoisomerism: ………………………………………………… Diagrams: Type of stereoisomerism: ………………………………………………… Diagrams: [4] [Total: 10] compound X