How to prepare Dry Carbon Dioxide Gas in Laboratory ?

GC2805 :How to prepare Dry Carbon Dioxide Gas in Laboratory ?

The simplest way - Put dry ice in a vacuum box

中環(香港鐵路站)總站. :

GC2805 :How to prepare Dry Carbon Dioxide Gas in Laboratory ?

The simplest way - Put dry ice in a vacuum box

噤如果只可以用 common chemicals and apparatus available in lab 呢

GC2805 :

中環(香港鐵路站)總站. :

GC2805 :How to prepare Dry Carbon Dioxide Gas in Laboratory ?

The simplest way - Put dry ice in a vacuum box

噤如果只可以用 common chemicals and apparatus available in lab 呢

HCl(l) + CaCO3(s) -> CaCl2(aq) + H2O(l) + CO2(g)

Pass gas over NaHCO3(aq) [to remove HCl(g) that may be present]
Then pass gas over H2SO4(l) [not (aq)] to remove water
Then collected over mercury [Collected by upward displacement does not work, because air contains water vapour]