What is the most adsorbed gas on activated charcoal?


Which of the following is adsorbed greatly by activated charcoal?

Water vapours. Stronger the intermolecular forces, easier to liquify, more strogly adsorbed.

Which of the following gases are easily adsorbed on activated charcoal?

Charcoals used in gas masks are unveiled to the atmospheric air so that its surface can absorb gas and water vapors. Generally, easily liquefiable gases are: CO2,Cl2,SO2. These gases are absorbed more than the permanent gases such as H2,O2,N2. Absorption depends on the critical temperature.

Which is adsorbed in minimum amount by the activated charcoal?

Here , hydrogen has the minimum critical temperature, (-240∘C) hence, is adsorbed in minimum amount.

What is activated charcoal adsorbed minimum?

When we compare the molecular weights of the gases from each option, the gas with the minimum molecular mass is hydrogen (H2). So we can clearly say that it is the gas that will have a minimum amount of critical temperature so it will have minimum adsorption by activated charcoal.

Which gas absorbs least?

Answer: (d) Lesser the value of critical temperature of gases lesser will be the extent of adsorption. Here H2 has lowest value of critical temperature, i.e., 33. Hence, hydrogen gas shows least adsorption on a definite amount of charcoal.

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Which will absorb more gas a lump of charcoal or its powder and why?

Powdered charcoal will adsorb more gas because of its larger surface area than a lump of charcoal.

Which gas is strongly absorbed by charcoal?

The gas that can be strongly adsorbed by charcoal is B) NH3.

The reason behind this is that NH3 is easily liquifiable. Charcoal strongly absorbs those compounds that are easily liquifiable, which is the case with ammonia or NH3. The gas can be easily liquefied because of more surface area.

Which of the following is used to absorb water?

Calcium chloride, calcium sulfate, activated carbon, zeolites and silica gel are all common desiccants.