Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from…
Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is
calcium oxide
distilled water
potassium hydroxide solution
sodium carbonate.
Solution
Like other alkali metals, potassium hydroxide combines with $\mathrm{CO}_2$ as such :-
2 \mathrm{KOH}+\mathrm{CO}_2 \rightarrow \mathrm{K}_2 \mathrm{CO}_3+\mathrm{H}_2 \mathrm{O}$