Smith wrote the following statements incorrectly. Insert a word to correct the statements.
(a) Lead bromide conducts electricity.
(b) Copper reacts with nitric acid to form nitrogen dioxide gas.
(c) Bromoethane reacts with sodium hydroxide to produce ethanol and sodium bromide.
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(a) Molten lead bromide conducts electricity.
Reason — Solid lead bromide is a non-conductor of electricity since it's ions are not free but held together by an electrostatic force of attraction. In molten state the ions become free and hence conduct electricity.
(b) Copper reacts with concentrated nitric acid to form nitrogen dioxide gas.
Reason — When copper reacts with dilute nitric acid it will form nitric oxide(NO) not nitrogen dioxide.
(c) Bromoethane reacts with aqueous sodium hydroxide to produce ethanol and sodium bromide.
Reason — Alcohol is prepared by the hydrolysis of alkyl halides (haloalkanes) on reaction with aqueous NaOH. Hydrolysis of bromoethane occurs with aqueous NaOH, not anhydrous/alcoholic NaOH.