NEET Chemistry Redox Reactions Questions Solved


In the balanced chemical reaction,

IO3+aI+bH+cH2O+dI2

a, b, c and d respectively correspond to [AIIMS 2005]

(1) 5, 6, 3, 3

(2) 5, 3, 6, 3

(3) 3, 5, 3, 6

(4) 5, 6, 5, 5

(1) IO3 + aI+ bH+ cH2O + dI2

Step 1 : I–1I2 (oxidation)

IO3I2 (reduction)

Step 2 : 2IO3 + 12H+I2 + 6H2O

Step 3 : 2IO3 + 12H+ + 10eI2 + 6H2O

2II2 + 2e

Step 4 : 2IO3 + 12H+ + 10eI2 + 6H2O

[2II2 + 2e]5

Step 5 : 2IO3 + 10I + 12H+ → 6I2 + 6H2O

IO3 + 5I + 6H+ → 3I2 + 3H2O

On comparing, a = 5, b = 6, c = 3, d = 3

Difficulty Level:

  • 51%
  • 29%
  • 16%
  • 5%