Answer: Sulfur dioxide is he gas formed in the chemical reaction below.
Explanation: The reaction between Acetic acid and Lithium hydrogen sulfite produces water, sulfur dioxide and lithium acetate. The balanced Chemical reaction is:
[tex]HC_2H_3O_2(aq.)+LiHSO_3(aq.)\rightarrow H_2O(l)+SO_2(g)+LiC_2H_3O_2(aq.)[/tex]
The gas produced is sulfur dioxide when this reaction takes place.