9:which of the following reaction is possible at anode? (a)2Cr3+ +7H2O ---?Cr2O72- +14H+ (b)F2----?2F- (c)1/2O2 +2H+ ---?H2O (d)none of these

SOLUTION OF OBJECTVE QUESTION NUMBER-9

The reaction possible at anode is (D) NONE OF THESE. The reqiured reaction is given below:-

Fe------> (Fe2+) + (2e-)

The anode is a part of corrosion cell in which oxidation occurs. Anions migrate to the +vely charged side of the battery by electrostatic attraction and the metal dissolves, often leaving pits.