Chemistry - Concentration Terms Question with Solution | TestHub

As similar to the % labelling for oleum, it can also be used for mixture of ${\mathrm{CO}}_2(\mathrm{g})+{\mathrm{H}}_2{\mathrm{CO}}_3.(100+\mathrm{X})\%$ means 100 gm of mixture of ${\mathrm{CO}}_2\&{\mathrm{H}}_2{\mathrm{CO}}_3$ required x gm water to convert all of the free ${\mathrm{CO}}_2$ into ${\mathrm{H}}_2{\mathrm{CO}}_3$. If 100 gm of $120\%$ labelled mixture of ${\mathrm{H}}_2{\mathrm{CO}}_3\&{\mathrm{CO}}_2$ is kept open for some time such that half of the ${\mathrm{CO}}_2$ gas escaped out, then the % label of the remaining mixture is -