Problem: Identify the Lewis acid and Lewis base in each of the following reactions. HNO2(aq) + OH−(aq) ⇌ NO2−(aq) + H2O(l) SO2(g) + H2O(l) ⇌ H2SO3(aq)

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FREE Expert Solution

We’re being asked to determine Lewis acid and Lewis base in each of the given reaction. 

But first, let’s define what is a Lewis and Lewis base.


Based on the Lewis definition:

Lewis acid is an electron pair acceptor.

Some characteristics of a Lewis acid:

When hydrogen is connected to an electronegative element such as P, O, N, S or halogens

▪ hydrogen gains a partially positive charge → makes hydrogen act as a Lewis acid

Positively charged metal ions

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Problem Details

Identify the Lewis acid and Lewis base in each of the following reactions.

 HNO2(aq) + OH(aq) ⇌ NO2(aq) + H2O(l) 

SO2(g) + H2O(l) ⇌ H2SO3(aq)

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