In a Bronsted acid$-$base reaction, the stronger acid reacts with the stronger base to produce a weaker

acid and a weaker base. Thus, whether a reaction $$goes$$ or $$does not go$$ can be used to determine the

relative strength of the Bronsted acids and bases in the reaction. From the data below, determine the order of

the strengths of the three Bronsted acids.

Reaction $1$: HSO$3$

$-+$ HPO$3$

$2-$ H$2$PO$3$

$-+$ SO$3$

$2-$ does not go

Reaction $2$: HSeO$4$

$-+$ HPO$3$

$2-$ H$2$PO$3$

$-+$ SeO$4$

$2-$ goes

Reaction $3$: HSeO$4$

$-+$ SO$3$

$2-$ HSO$3$

$-+$ SeO$4$

$2-$ goes