Question

____is formed when carbondioxide is passed through an aqueous solution of sodium hydroxide.​

Answer 1

Explanation:

Carbon dioxide is passed through a solution of sodium hydroxide

Answer 2

$\huge\underline\pink{Required\:Answer}$

You get NaHCO3, via an overall reactionNa2CO3 + CO2 + H2O ---> 2 NaHCO3The Na2CO3 is of course dissociated into ions Na+(aq) and CO3-- , as also is the NaHCO3, as Na+ and HCO3-. You can look upon the CO2 as combining with the H2O to give carbonic acid H2CO3.