Zadanie 33
What is the IUPAC name of the compound shown? A. 4-chloro-5-methylhexan-2-one B. 3-chloro-2-methylhexan-5-one C. 5-methyl-4-chlorohexan-2-one D. 4-chloro-5-methylhexan-2-ol
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What is the IUPAC name of the compound shown? A. 4-chloro-5-methylhexan-2-one B. 3-chloro-2-methylhexan-5-one C. 5-methyl-4-chlorohexan-2-one D. 4-chloro-5-methylhexan-2-ol
Which compound can be oxidized to a carboxylic acid by heating under reflux with an excess of an acidified oxidizing agent? A. CH3CH(OH)CH2CH3 B. (CH3)3COH C. (CH3)2CHCH2OH D. CH3COCH2CH3
How many optical isomers exist for menthol, the compound shown? A. 3 B. 6 C. 8 D. 9
1-Bromobutane reacts with warm aqueous sodium hydroxide to form butan-1-ol. CH3CH2CH2CH2Br + OH− → CH3CH2CH2CH2OH + Br− Which row gives the mechanism and the rate expression of this reaction? A. SN1; rate = k[C4H9Br] B.…
Which compound gives an optically active product when it is reduced? A. Pentanal B. Pentan-3-one C. 3-Methylbutanal D. Pentan-2-one
Which statements about the molecular ion, M+, in a mass spectrum are correct? I. The M+ peak is always the peak of greatest intensity in the spectrum. II. The M+ ion forms when a molecule loses one electron. III. The m/z…
Which compound gives this 1H NMR spectrum? A. Diethyl ether, CH3CH2OCH2CH3 B. Methyl propanoate, CH3CH2COOCH3 C. Butanone, CH3COCH2CH3 D. Ethyl ethanoate, CH3COOCH2CH3
A student determines the concentration of a solution of hydrochloric acid by titration. The same titration is repeated five times, and the titres are scattered both above and below the mean, because the student finds it difficult to judge the exact point at…
Hydrogen peroxide has the molecular formula H2O2. Which statement about this formula is correct? A. It shows that the two oxygen atoms are joined by a double bond B. It is the same as the empirical formula of hydrogen peroxide C. It shows that one mole…
(i) Deduce the ionic equation, including state symbols, for the reaction of hydrogen bromide gas with water. (ii) Calculate the pH of 0.25 mol dm−3 hydrobromic acid. (iii) Explain why a solution of methanoic acid has a higher pH than…