Aldehydes Ketones and Carboxylic AcidshardNUMERICAL

In the balanced complete stoichiometric equation for the haloform reaction of exactly 1 mole of acetAldehydes Ketones and Carboxylic Acids Chemistry Question

Question

In the balanced complete stoichiometric equation for the haloform reaction of exactly 1 mole of acetone ($CH_3COCH_3$) with excess $I_2$ and $NaOH$, what is the total number of moles of $NaOH$ consumed?

Answer: 4

💡 Solution & Explanation

The overall balanced reaction is: $CH_3COCH_3 + 3 I_2 + 4 NaOH \rightarrow CHI_3 \downarrow + CH_3COONa + 3 NaI + 3 H_2O$. Three moles of $NaOH$ act as a base during the replacement of three $\alpha$ -hydrogens with iodine, and the fourth mole acts as a nucleophile to cleave the carbon-carbon bond. Total = 4.

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