Correct Answer: C
Explanation:
Macroscopically, Raney nickel is a finely divided gray powder. Microscopically, each particle of this powder is a three-dimensional mesh, with pores of irregular size and shape of which the vast majority are created during the leaching process. Raney nickel is notable for being thermally and structurally stable, as well has having a large surface area. These properties are a direct result of the activation process and contribute to a relatively high catalytic activity.
The alloy, usually as a fine powder, is treated with a concentrated solution of sodium hydroxide. The simplified leaching reaction is given by the following chemical equation: