Q4.92P

Predict the product(s) and write a balanced equation for each of the following redox reactions:

$(a) M g (s) + H C l (a q) \to$

$(b) L i C l (l) \overset{eletricity}{\to}$ $(b) L i C l (l) \overset{e l e t r i c i t y}{\to}$

$(c) S n C l_{2} (a q) + C o (s) \to$

Verified

Answer

The product and the balance equation of the given reactions are:

(a) $M g (s) + 2 H C l (a q) \to M g C l_{2} (a q) + H_{2} (g)$

(b) $2 L i C l (l) \overset{e l e t r i c i t y}{\to} 2 L i (l) + C l_{2} (g)$

1Step 1: Determine the product of the equation (a)

The given redox reaction is a displacement reaction.

Magnesium displaces chlorine from HCl to form Magnesium chloride.

The given reaction is:

$M g (s) + H C l (a q) \to$

The balanced reaction is:

$M g (s) + 2 H C l (a q) \to M g C l_{2} (a q) + H_{2} (g)$

2Step 2: Determine the product of the equation (b)

The given redox reaction is a decomposition reaction.

Lithium chloride decomposes and forms lithium and chlorine.

The given reaction is:

$L i C l (l) \overset{e l e t r i c i t y}{\to}$

The balanced reaction is:

$2 L i C l (l) \overset{e l e t r i c i t y}{\to} 2 L i (l) + C l_{2} (g)$

3Step 3: Determine the product of the equation (c)

The given redox reaction is a displacement reaction.

The given reaction is:

$S n C l_{2} (a q) + C o (s) \to$

The balanced reaction is:

$S n C l_{2} (a q) + C o (s) \to C o C l_{2} (a q) + S n (s)$