Question
Question: Molten Ag absorbs about .......... times of O 2:...
Molten Ag absorbs about .......... times of O 2:
10
20
40
80
20
Solution
Molten silver is known to absorb a significant amount of oxygen. This property is unique to silver among common metals. At its melting point (961.78 °C) and atmospheric pressure, molten silver can dissolve approximately 20 times its own volume of oxygen gas. When the molten silver solidifies, the solubility of oxygen decreases drastically, leading to the evolution of the absorbed oxygen, a phenomenon often called "spitting of silver" or "spluttering."
The question asks for the approximate volume of O₂ absorbed by molten Ag in "times." This refers to the volume of O₂ gas (measured at standard conditions) absorbed per unit volume of molten silver. The widely accepted value for this phenomenon is around 20 times.