It is important to periodically \"vent\" the vessel being used to mix solvent la

Question

It is important to periodically "vent" the vessel being used to mix solvent layers during an extraction. This means unscrewing the vial cap (in your experiment, or opening the stopcock of the separatory funnel (used on larger scales--see p. 76 in the lab manual. This is because: The oxygen in the air facilitates equilibration. Pressure from solvent vapors can build up, causing the stopper/lid to be ejected and releasing the vessel's contents. Quenching acids with carbonate or bicarbonate solutions can cause carbon dioxide to be released, and the resulting pressure build-up can cause the stopper/lid to be ejected and release the vessel's contents. Both solvent vapor and (bi)carbonate quenches can cause hazardous pressure build-up. All of the above

Explanation / Answer

yes, it is very important to periodically vent the vessel used to mix solvent layers during extraction. since solvents are inert to the reaction with oxygen. Presure from solvent vapours are build up is correct. It is also correct that carbon dioxide is formed with carconates and bicarbonates. Hence correct option is C not D.

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