Question

Complete and balance the equation for each of the following reactions:

a.${\mathrm{ZnCO}}_3\left(s\right)+\mathrm{HBr}\left(aq\right)⟶$

b.$\mathrm{Zn}\left(s\right)+\mathrm{HCl}\left(aq\right)⟶$

c.$\mathrm{HCl}\left(aq\right)+{\mathrm{NaHCO}}_3\left(s\right)⟶$

d.${\mathrm{H}}_2{\mathrm{SO}}_4\left(aq\right)+\mathrm{Mg}\left(\mathrm{OH}{)}_2\right(s)⟶$

Short answer

(part a). ${\mathrm{ZnCO}}_3\left(\mathrm{s}\right)+2\mathrm{HBr}\left(\mathrm{aq}\right)\to {\mathrm{ZnBr}}_2\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$

(part b) .$\mathrm{Zn}\left(\mathrm{s}\right)+2\mathrm{HCl}\left(\mathrm{aq}\right)\to {\mathrm{ZnCl}}_2\left(\mathrm{aq}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)$

(part c) . $\mathrm{HCl}\left(\mathrm{aq}\right)+{\mathrm{NaHCO}}_3\left(\mathrm{s}\right)\to \mathrm{NaCl}\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$

(part d) .${\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)+\mathrm{Mg}\left(\mathrm{OH}{)}_2\right(\mathrm{s})\to {\mathrm{MgSO}}_4(\mathrm{s})+2{\mathrm{H}}_2\mathrm{O}(\mathrm{l})$

Step-by-step solution

Given Information  (part a)

The reactions

$a.{\mathrm{ZnCO}}_3\left(\mathrm{s}\right)+2\mathrm{HBr}\left(\mathrm{aq}\right)\to$

Explanation  (part a )

$a.{\mathrm{ZnCO}}_3\left(\mathrm{s}\right)+2\mathrm{HBr}\left(\mathrm{aq}\right)\to {\mathrm{ZnBr}}_2\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$

 Given Information (part b)

$b.\mathrm{Zn}\left(\mathrm{s}\right)+2\mathrm{HCl}\left(\mathrm{aq}\right)\to$

 explanation (part b) 

$b.\mathrm{Zn}\left(\mathrm{s}\right)+2\mathrm{HCl}\left(\mathrm{aq}\right)\to {\mathrm{ZnCl}}_2\left(\mathrm{aq}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)$

Step 5  Given data (part c)

$c.\mathrm{HCl}\left(\mathrm{aq}\right)+{\mathrm{NaHCO}}_3\left(\mathrm{s}\right)\to$

Explanation  (part c)

$c.\mathrm{HCl}\left(\mathrm{aq}\right)+{\mathrm{NaHCO}}_3\left(\mathrm{s}\right)\to \mathrm{NaCl}\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$

 Given data (part d) 

$d.{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)+\mathrm{Mg}\left(\mathrm{OH}{)}_2\right(\mathrm{s})\to$

Explanation  (part d) 

$d.{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)+\mathrm{Mg}\left(\mathrm{OH}{)}_2\right(\mathrm{s})\to {\mathrm{MgSO}}_4(\mathrm{s})+2{\mathrm{H}}_2\mathrm{O}(\mathrm{l})$