Carbonyl Compounds

Acetone (CH COCH ) can be converted to 2-methylpropan-2-ol (tert-butyl alcohol) by reacting it with a Grignard reagent such as methyl magnesium bromide (CH MgBr). The Grignard reagent acts as a nucleophile and adds to the carbonyl carbon of acetone, resulting in the formation of a tertiary alcohol. - Sodium hydride (NaH) is a strong base used for deprotonation reactions, but it is not suitable for reducing acetone to a tertiary alcohol. - Hydrogen gas with Ni catalyst is typically used for hydrogenation reactions, but acetone does not undergo hydrogenation to form 2-methylpropan-2-ol. - Sodium borohydride (NaBH ) is a mild reducing agent that reduces carbonyl compounds to alcohols, but it would not produce a tertiary alcohol from acetone. Therefore, the correct method is using a Grignard reagent to convert acetone to 2-methylpropan-2-ol.

To identify which compounds are neutral, we need to understand that a neutral compound is one where the cation and anion do not have any significant charge interaction that would make the compound ionic or polar.
- : and — both ions, thus ionic.
- : and — both ions, thus ionic.
- : and — both ions, hence neutral (ionic compound, but stable).
- : Contains an ionic nature and extra negative charge from nitrate ions, thus ionic. Hence, is the neutral compound, making the correct answer .