Question

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

$\left(\mathit{a}\right)\mathit{M}\mathit{g}\left(\mathit{s}\right)\mathbf{+}\mathit{H}\mathit{C}\mathit{l}\left(\mathit{a}\mathit{q}\right)\mathbf{\to }$

$\mathbf{\left(}\mathbf{b}\mathbf{\right)}\mathit{L}\mathit{i}\mathit{C}\mathit{l}\mathbf{\left(}\mathbf{l}\mathbf{\right)}\stackrel{\mathbf{eletricity}}{\mathbf{\to }}$$\left(\mathit{b}\right)\mathit{L}\mathit{i}\mathit{C}\mathit{l}\left(\mathit{l}\right)\stackrel{\mathbf{e}\mathbf{l}\mathbf{e}\mathbf{t}\mathbf{r}\mathbf{i}\mathbf{c}\mathbf{i}\mathbf{t}\mathbf{y}}{\mathbf{\to }}$

$\left(\mathit{c}\right)\mathit{S}\mathit{n}\mathit{C}{\mathit{l}}_{\mathbf{2}}\left(\mathit{a}\mathit{q}\right)\mathbf{+}\mathit{C}\mathit{o}\left(\mathit{s}\right)\mathbf{\to }$

Short answer

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

(a)$Mg\left(s\right)+2HCl\left(aq\right)\to MgC{l}_2\left(aq\right)+H_2\left(g\right)$

(b)$2LiCl\left(l\right)\stackrel{eletricity}{\to }2Li\left(l\right)+C{l}_2\left(g\right)$

(c)$SnC{l}_2\left(aq\right)+Co\left(s\right)\to CoC{l}_2\left(aq\right)+Sn\left(s\right)$

Step-by-step solution

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:

$Mg\left(s\right)+HCl\left(aq\right)\to$

The balanced reaction is:

$Mg\left(s\right)+2HCl\left(aq\right)\to MgC{l}_2\left(aq\right)+H_2\left(g\right)$

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:

$LiCl\left(l\right)\stackrel{eletricity}{\to }$

The balanced reaction is:

$2LiCl\left(l\right)\stackrel{eletricity}{\to }2Li\left(l\right)+C{l}_2\left(g\right)$

Determine the product of the equation (c)

The given redox reaction is a displacement reaction.

The given reaction is:

$SnC{l}_2\left(aq\right)+Co\left(s\right)\to$

The balanced reaction is:

$SnC{l}_2\left(aq\right)+Co\left(s\right)\to CoC{l}_2\left(aq\right)+Sn\left(s\right)$