In an experiment, of oxygen gas is completely adsorbed on of finely divided metal powder. What is th — Surface Chemistry Chemistry Question
Question
In an experiment, $3.6\text{ g}$ of oxygen gas is completely adsorbed on $1.2\text{ g}$ of finely divided metal powder. What is the volume of oxygen adsorbed strictly per gram of the adsorbent at STP?
Answer: C
💡 Solution & Explanation
Mass of $O_2$ adsorbed per gram of adsorbent $= 3.6\text{ g} / 1.2\text{ g} = 3.0\text{ g}$. Moles of $O_2$ per gram $= 3.0 / 32\text{ mol}$. Volume at STP $= (3.0 / 32) \times 22.4\text{ L} = 2.1\text{ L}$.
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