Consider the following list of reagents: Acidified K 2 Cr 2 O 7, alkaline KMnO 4, CuSO 4, H 2 O 2, Cl 2, O 3 FeCl 3, HNO 3 and Na 2 S 2 O 3. The total number of reagents that can oxidise aqueous iodide to iodine is

Question

Consider the following list of reagents: Acidified K 2 Cr 2 O 7, alkaline KMnO 4, CuSO 4, H 2 O 2, Cl 2, O 3 FeCl 3, HNO 3 and Na 2 S 2 O 3. The total number of reagents that can oxidise aqueous iodide to iodine is (A) 4 (B) 5 (C) 6 (D) 7

Tardigrade Admin · Accepted Answer

6 KI + K 2 Cr 2 O 7+7 H 2 SO 4 arrow 4 K 2 SO 4+ Cr 2( SO 4)3 +3 I 2+7 H 2 O 2 CuSO 4+4 KI arrow Cu 2 I 2+2 K 2 SO 4+ I 2 H 2 O 2+2 KI arrow I 2+2 KOH Cl 2+2 KI arrow 2 KCl + I 2 O 3+2 KI + H 2 O arrow 2 KOH + I 2+ O 2 2 FeCl 3+2 KI arrow 2 FeCl 2+2 KCl + I 2 4 HNO 3+2 KI arrow 2 KNO 3+ NO 2+ I 2+2 H 2 O

Q. Consider the following list of reagents: Acidified K2​Cr2​O7​, alkaline KMnO4​,CuSO4​,H2​O2​,Cl2​,O3​ FeCl3​,HNO3​ and Na2​S2​O3​. The total number of reagents that can oxidise aqueous iodide to iodine is

4

5

6

7

Q. Consider the following list of reagents:
Acidified $K_{2} C r_{2} O_{7}$ , alkaline $K M n O_{4}, C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}$ $F e C l_{3}, H N O_{3}$ and $N a_{2} S_{2} O_{3}$ . The total number of reagents that can oxidise aqueous iodide to iodine is