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A voltaic cell consists of a zinc electrode in aqueous zinc sulfate and a copper electrode in aqueous copper(II) sulfate, joined by an external circuit and by a salt bridge containing aqueous potassium nitrate. What occurs during the operation of the cell? I.…
Which species attacks a molecule of ethane in the first propagation step of its reaction with chlorine in ultraviolet light? A. chlorine atom, Cl ⋅ B. chlorine molecule, Cl2 C. chloride ion, Cl− D. hydrogen chloride molecule, HCl
Ethane and chlorine are exposed to ultraviolet light. Which species will most readily react with an ethane molecule? A. Cl2 molecule B. Cl− ion C. Cl ⋅ atom D. H+ ion
Which pair of compounds are structural isomers? A. CH3CH2CH2OH and CH3CH2CHO B. CH3COOH and CH3CH2OH C. CH3CH2COOH and CH3CH2CH2COOH D. CH3COOCH3 and CH3CH2COOH
Which pair of compounds are structural isomers of each other? A. CH3CH2CH2OH and CH3CH2OH B. CH3CH2CHO and CH3CH2CH2OH C. CH3CH2NH2 and CH3CH2OH D. CH3CH2COOH and CH3COOCH3
How are the amine and the alcohol shown classified? A. primary amine and primary alcohol B. tertiary amine and secondary alcohol C. primary amine and secondary alcohol D. secondary amine and secondary alcohol
Which option classifies compound X as an amine and compound Y as an alcohol correctly? A. Primary amine and primary alcohol B. Secondary amine and primary alcohol C. Tertiary amine and primary alcohol D. Secondary amine and tertiary alcohol
2-Methylpropan-1-ol is heated with an acidified oxidizing agent and the first product is distilled off as it forms. What is this product? A. (CH3)2CHCOOH B. (CH3)2CHCHO C. (CH3)2CHCH2OH D. CH3COCH2CH3
Butan-1-ol is heated with an acidified oxidizing agent, and the first product formed is distilled off as soon as it forms. Which compound is collected? A. CH3CH2COCH3 B. CH3CH2CH2CH2OH C. CH3CH2CH2CHO D. CH3CH2CH2COOH
A student determines the concentration of an ethanoic acid solution by titration against standard NaOH(aq) from a burette. Which action would introduce a systematic error? A. Reading the burette at slightly different eye levels in each trial B. Using a…