Which of the following are Bronsted-Lowry acids? $a.$ $HSO_3^(-)$ , $b.$ $HF$ , $c.$ $SO_3^(2-)$ , $d.$ $SO_4^(2-)$ , $e.$ $Cl_2$ ?

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Answer 1 · 2016-05-24T15:28:15

$"(a) and (b)"$

Bronsted-Lowry acids are proton donors, for bisulfite, $HSO_3^-$ :

$HSO_3^(-) + H_2O rightleftharpoons H_3O^+ + SO_3^(2-)$

Of course, this equilibrium lies to the left, as it does for weakly acidic hydrogen fluoride.

On the other hand, $Cl_2$ , can donate no protons to the solvent, and is not classified as an acid.

Which of the following are Bronsted-Lowry acids? a.a. HSO_3^(-)HSO_3^(-), b.b. HFHF, c.c. SO_3^(2-)SO_3^(2-), d.d. SO_4^(2-)SO_4^(2-), e.e. Cl_2Cl_2?