Which of the following reactions is a redox reaction?

Question

Which of the following reactions is a redox reaction? (A) CaCO3 + 2HCI → CaCl2+H2O+CO2 (B) AgNO3 + KI → Agl + KNO3 (C) Cl2+2Br- → Br2+2Cl- (D) BaCI2 + SO42-→ BaSO4+2Cl-

Tardigrade Admin · Accepted Answer

Correct answer is (c) Cl2+2Br- → Br2+2Cl-

Q. Which of the following reactions is a redox reaction?

$C a C O_{3} + 2 H C I \to C a C l_{2} + H_{2} O + C O_{2}$

$A g N O_{3} + K I \to A g l + K N O_{3}$

$C l_{2} + 2 B r^{-} \to B r_{2} + 2 C l^{-}$

$B a C I_{2} + S O_{4}^{2 -} \to B a S O_{4} + 2 C l^{-}$

Correct answer is (c) $C l_{2} + 2 B r^{-} \to B r_{2} + 2 C l^{-}$

Q. Which of the following reactions is a redox reaction?

CaCO3​+2HCI→CaCl2​+H2​O+CO2​

AgNO3​+KI→Agl+KNO3​

Cl2​+2Br−→Br2​+2Cl−

BaCI2​+SO42−​→BaSO4​+2Cl−

Correct answer is (c) Cl2​+2Br−→Br2​+2Cl−

$C a C O_{3} + 2 H C I \to C a C l_{2} + H_{2} O + C O_{2}$

$A g N O_{3} + K I \to A g l + K N O_{3}$

$C l_{2} + 2 B r^{-} \to B r_{2} + 2 C l^{-}$

$B a C I_{2} + S O_{4}^{2 -} \to B a S O_{4} + 2 C l^{-}$

Correct answer is (c) $C l_{2} + 2 B r^{-} \to B r_{2} + 2 C l^{-}$