Chemistry > QUESTIONS & ANSWERS > Chemistry A Unit H432/02: Synthesis and analytical techniques Advanced GCE Mark Scheme for June 2018 (All)
Chemistry A Unit H432/02: Synthesis and analytical techniques Advanced GCE Mark Scheme for June 2018
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16 (a) (i) 3-methylbutan-2-ol 1 IGNORE lack of hyphens or addition of commas ALLOW 3-methylbutane-2-ol DO NOT ALLOW 2-methylbutan-3-ol OR 3-methylbut-2-ol OR 3-methbutan-2-ol OR 3-methybutan-... 2-ol OR 3-methlybutan-2-ol (ii) (CH3)2CHCHOHCH3 1 ALLOW brackets around OH e.g. (CH3)2CHCH(OH)CH3 ALLOW any unambiguous structural formula e.g. CH3CH(CH3)CHOHCH3 CH3CH(CH3)CH(CH3)OH (iii) One mark for each correct structure. 2 ALLOW any combination of skeletal OR structural OR displayed formula as long as unambiguous ALLOW in either order [Show More]
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