JEE Advanced levelOne or more correct optionsDifficulty 3 of 3rx107
Permanganate oxidises iodide to iodate in basic medium: MnOX4X−+IX−MnOX2+IOX3X−. For the balanced equation with smallest whole numbers, select ALL correct statements.
A6 electrons are lost per IX− ion
BHX2O appears as a reactant
C4 OHX− ions appear on the product side
DThe sum of all coefficients is 9
Answer: A, B, D
Balanced: 2MnOX4X−+IX−+HX2O2MnOX2+IOX3X−+2OHX−. I goes from -1 to +5 (6 electrons), water is a reactant, and 2 OHX− (not 4) are produced. The sum of coefficients is 2+1+1+2+1+2 = 9, so statements 1, 2 and 4 are correct.