Zadanie 15
What is the correct classification of the molecule shown? A. Carboxylic acid B. Ketone C. Ether D. Ester
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What is the correct classification of the molecule shown? A. Carboxylic acid B. Ketone C. Ether D. Ester
Which of the following are structural isomers of the compound shown? I. 2-methylbut-2-ene II. 2-methylpent-1-ene III. pent-2-ene A. I and II only B. I and III only C. II and III only D. I, II and III
The table shows the observed colour of three octahedral complex ions formed by the same metal ion, M2+, with different ligands. Which statement about these complex ions and their colours is correct? A. Splitting of the d-orbitals is greatest in…
Benzene reacts with the nitronium ion, NO2+. C6H6 + NO2+ → C6H5NO2 + H+ Which species is the electrophile, and why? In each option the species is given first and the reason second. A. NO2+, accepts an electron pair B. NO2+, donates…
Which set contains compounds that all belong to one homologous series? A. CH3CHO, CH3COCH3, CH3CH2CHO B. CH3COOH, CH3CH2COOH, CH3(CH2)2COOH C. CH3CH2NH2, CH3CH2NHCH3, CH3CH2CH2NH2 D.…
Which molecules exhibit cis-trans isomerism? I. Pent-2-ene II. 1,1-dichloroethene III. 1,2-dibromoethene A. I and II only B. I and III only C. II and III only D. I, II and III
What are the splitting patterns of the signals in the 1H NMR spectrum of ethoxyethane, CH3CH2OCH2CH3? A. A doublet and a quartet B. A triplet and a quartet C. A singlet and a triplet D. A doublet and a triplet
Which of the compounds shown is chiral and so exists as a pair of enantiomers? A. Compound A B. Compound B C. Compound C D. Compound D
Which compound could produce this mass spectrum? A. Butanone B. Butanal C. Butan-1-ol D. Butan-2-ol
A chemist wants to confirm that a sample of an unknown organic compound contains a carbonyl group, C=O. Which technique gives this information most directly? A. Mass spectrometry B. Paper chromatography C. 1H NMR spectroscopy D. Infrared…