does H2SO3 produce 2H+ or single H+?

Question

i thought that only the h-atoms present with o-atom are donated in acids. if this is right then h2so3 has only one h-atom bonded with o-atom which as OH is bonded to s-atom by single bond,the other h is solely bonded to s-atom by single bond . The s-atom has more 2 o-atoms in double bonded state ...........................
than it must produce one h+ if i am right so long
CAN ANYONE PLZ TELL ME THAT WHETHER I M RIGHT that only the h-atoms present with o-atom are donated in acids and in this context plz answer the question:-"does H2SO3 produce 2H+ or single H+"

Answer 1

Yes, Angshuman, you are absolutely right. But think one step ahead, & you'll find that after H2SO3 has donated one H+, what remains is a very unstable (HSO3)-, which can also donate one H+, thereby becoming (SO3)--. But instead of writing these multiple steps one by one, what we do is we add up the 2 processes & write it as a single step. So, in the final reaction, we say that H2SO3 produces 2H+.

Answer 2

You can get 2H+ . It has nothing to do with the oxygen atoms, but with the stability of the remaining cation (SO3)2-.

Answer 3

H2 + SO3 - H2SO3

H2SO3 - H2 + SO3
IT IS A REVERSIBLE REACTION THAT GIVES H2