Question

In this experiment, the reaction is quenched with aqueous nahco3. what byproducts form when nabh4 reacts with water? which byproduct poses the greater risk? why?

Answer 1

NaBH 4 reacts with water and alcohols, with the evolution of hydrogen gas and the formation of the corresponding borate, the reaction being especially fast at low pH. Nevertheless, alcohol, often methanol or ethanol, is generally the solvent of choice for sodium borohydride reductions of ketones and aldehydes.

Methanol poses a greater risk because it is metabolized into a very toxic substance i.e. formic acid and also highly poisonous.

What is Methanol?

Methanol is a promising energy carrier because, as a liquid, it is easier to store than hydrogen and natural gas. Its energy density is, however, lower than methane, per kg.

To know more about methanol go to the given link :

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