what the balanved equation for gaseous sulfur dioxide reacts with water to form aq sulfurous acid (H2SO3)
2 answers
SO2 + H2O --> H2SO3
Because the phases are given in the question I would include these in the answer
SO2(g) + H2O(l) --> H2SO3(aq)
SO2(g) + H2O(l) --> H2SO3(aq)