Q4.88P

Balance each of the following redox reactions and classify it as a combination, decomposition, or displacement reaction:

$(a) H I (g) \to H_{2} (g) + I_{2} (g)$

$(b) Z n (s) + A g N O_{3} (a q) \to Z n {(N O_{3})}_{2} (a q) + A g (s)$

$(c) N O (g) + O_{2} (g) \to N_{2} O_{4} (l)$

Verified

Answer

The classifications of the given reactions are:

(a) Decomposition reaction

(b) Displacement reaction

1Step 1: Write balanced reaction of equation (a)

The given reaction is:

$H I (g) \to H_{2} (g) + I_{2} (g)$

The balanced reaction is:

$2 H I (g) \to H_{2} (g) + I_{2} (g)$

The given redox reaction is a decomposition reaction.

In this reaction, HI decomposes and forms $H_{2}$ and $I_{2} .$

2Step 2: Write balanced reaction of equation (b)

The given reaction is:

$Z n (s) + A g N O_{3} (a q) \to Z n {(N O_{3})}_{2} (a q) + A g (s)$

The balanced reaction is:

$Z n (s) + 2 A g N O_{3} (a q) \to Z n {(N O_{3})}_{2} (a q) + 2 A g (s)$

The given redox reaction is a displacement reaction.

The zinc atom replaces silver atom from $A g N O_{3}$ and forms $Z n {(N O_{3})}_{2} .$

3Step 3: Write balanced reaction of equation (c)

The given reaction is:

$N O (g) + O_{2} (g) \to N_{2} O_{4} (l)$

The balanced reaction is:

$2 N O (g) + O_{2} (g) \to N_{2} O_{4} (l)$

The given redox reaction is a combination reaction.

In this reaction, NO and O₂combines and forms N₂O_4.

View solution