text: does h2o2 + h2co3 = 2h2o + co?   i doubt it.  h2co3 (carbonic acid) naturally decomposes to form water and co2. h2o2 (hydrogen peroxide) naturally decomposes to form o2 and water.  i am not totally certain what effect each substance would have on the other, but i dont anticipate any carbon monoxide forming, i think it far more likely for water and carbon dioxide to be produced instead.