Consider the reaction shown below. Is the equilibrium likely to favor the reactants or products? Hint:...

Consider the reaction shown below. Is the equilibrium likely to favor the reactants or products? Hint: you can view this reaction from a HSAB perspective.

H2S + OH- --><-- SH- + H2O (please explain)

A. The equilibrium likely favors the reactants.

B. It is not possible to make a reasonable prediction without knowing the pKas of H2S and H2O.

C. The equilibrium likely favors the products.

Solutions

Expert Solution

It is not possible to make a reasonable prediction without knowing the pKas of H2S and H2O. And also we have know which is in higher concentration and which one is in lower concentration

OH- is a hard base but H2S is a soft acid. so the reaction becomes slow.

The properties of HSAB are as shown below

Hard acid: High positive charge, Small size, Not easily polarizable

Hard base: Low polarizability, High electronegativity, Not easily oxidized

Soft acid: Low positive charge, Large size, easily oxidized, Highly polarizable

Soft base: High polarizability, Diffuse donor orbital, Low electronegativity, Easily oxidized

queen_honey_blossom answered 1 year ago

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