Which one of the following reactions involves oxidation reduction?

Question

Which one of the following reactions involves oxidation reduction? (A)  H2+Br2 xrightarrow[]2HBr  (B)  NaBr+HCl xrightarrow[]NaCl+HBr  (C)  HBr+AgNO3 xrightarrow[]AgBr+HNO3  (D)  2NaOH+H2SO4 xrightarrow[]Na2SO4+2H2O

Tardigrade Admin · Accepted Answer

(b) NaBr + HCl longrightarrow NaCl + HBr It is a substitution reaction. (c) HBr + AgNO 3 longrightarrow AgBr + HNO 3 It is a substitution and precipitation reaction because AgBr is precipitated during this reaction. (d) 2 NaOH + H 2 SO 4 longrightarrow Na 2 SO 4+2 H 2 O It is a neutralisation reaction because acid and base are reacting to produce salt and H 2 O . (a) overset0 H 2+ overset0Br 2 longrightarrow 2 H + Br - This is oxidation reduction reaction because during this reaction oxidation number are changing.

Q. Which one of the following reactions involves oxidation reduction?

$H_{2} + B r_{2} 2 H B r$

$N a B r + H Cl N a Cl + H B r$

$H B r + A g N O_{3} A g B r + H N O_{3}$

$2 N a O H + H_{2} S O_{4} N a_{2} S O_{4} + 2 H_{2} O$

Q. Which one of the following reactions involves oxidation reduction?

H2​+Br2​​2HBr

NaBr+HCl​NaCl+HBr

HBr+AgNO3​​AgBr+HNO3​

2NaOH+H2​SO4​​Na2​SO4​+2H2​O

$H_{2} + B r_{2} 2 H B r$

$N a B r + H Cl N a Cl + H B r$

$H B r + A g N O_{3} A g B r + H N O_{3}$

$2 N a O H + H_{2} S O_{4} N a_{2} S O_{4} + 2 H_{2} O$