why is it necessary to use previously boiled and cooled distilled water in the dilution of your unknown carbonate mixture?

Question

can methyl orange be used as indicator if only NaOH is present in the sample?

Answer 1

we know that gases are soluble in liquids at a certain temperature only..if the liquid however is heated up to a certain point, then the ases dissolved in it would be removed through steam..therefore, distilled water is boiled in orde to remove the dissolved ases such as CO2 that would react with the carbonate ions. it is cooled but ensured to be covered so that the removed gases wont go back and re-dissolve.