1. A. Briefly explain why hydrogen atoms in methane are all in equivalent positi

Question

1. A. Briefly explain why hydrogen atoms in methane are all in equivalent positions? B. Briefly explain why there are no structural isomers of propane (c3h8) C. Briefly explain how geometric isomerism differs from structural isomerism in carbon compounds? 2. Use the structural formulas to explain how the other two structural isomers of C5H12 differ: a. from n-pentane b. from each other 3. Use the structural formulas to explain how the other structural isomers of C6H14 differ: a. from n pentane b. from each other

Explanation / Answer

(A)In methane CH4 carbon atom is sp3 hybridised hence due to tetrahedral structure the hydrogen atoms are in all equivalent positions. (B) Propane has only three Carbon atoms hence it cannot form branches therefore it has no structural isomers. (C) Structural molecules are those with identical atomic composition but differ in how the atoms are arranged and bound together. Geometric isomerism are molecules that share identical atomic composition and molecular bonds but different spatial organization.They are incapable of rotating. (D) pentane has 3 structural isomers 1. n- pentane 2. isopentane(2 - methylbutane) 3. neopentane( 2,2 - dimethyl propane) (E) hexane has 5 structural isomers (1). hexane (2.) 2-methylpentane (3) 3 - methylpentane (4) 2,3- dimethylbutane (5) 2,2- dimethylbutane

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