"Research scholar A added zinc pieces into aqueous `FeCl_(3)`, solution and performed some experiments with resultant solution." "Research scholar B passed `H_(2)` gas into aqueous `FeCl_(3)` , solution and performed some experiments with resultant solution."
Yellow coloured `FeCl_(3)` , solution changed to light green (appeared as colourless) in the experiment of

Options

A. A
B. B
C. both of these
D. none of these

Answer

A

Explanation

`Aq.FeCl_(3)`, is acidic. On adding Zn, nascent hydrogen produced reduces yellow `FeCl_(3)` , to light green `FeCl_(2)`, solution.