Question

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

$$\begin{gathered} a.{\mathrm{KHCO}}_3\left(s\right)+\mathrm{HCl}\left(aq\right)⟶ \\ b.\mathrm{Ca}\left(s\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(aq\right)⟶ \\ c.{\mathrm{H}}_2{\mathrm{SO}}_4\left(aq\right)+\mathrm{Ca}\left(\mathrm{OH}{)}_2\right(s)⟶ \\ d.{\mathrm{Na}}_2{\mathrm{CO}}_3(s)+{\mathrm{H}}_2{\mathrm{SO}}_4(aq)⟶ \end{gathered}$$

Short answer

$$\begin{gathered} a.{\mathrm{KHCO}}_3\left(\mathrm{s}\right)+\mathrm{HCl}\left(\mathrm{aq}\right)\to {\mathrm{CO}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+\mathrm{KCl}\left(\mathrm{aq}\right) \\ b.\mathrm{Ca}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{CaSO}}_4\left(\mathrm{aq}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right) \\ c.{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)+\mathrm{Ca}\left(\mathrm{OH}{)}_2\right(\mathrm{s})\to {\mathrm{CaSO}}_4(\mathrm{s})+2{\mathrm{H}}_2\mathrm{O}(\mathrm{l}) \\ d.{\mathrm{Na}}_2{\mathrm{CO}}_3(\mathrm{s})+{\mathrm{H}}_2{\mathrm{SO}}_4(\mathrm{aq})\to {\mathrm{Na}}_2{\mathrm{SO}}_4(\mathrm{s})+{\mathrm{CO}}_2(\mathrm{g})+{\mathrm{H}}_2\mathrm{O}(\mathrm{l}) \end{gathered}$$

Step-by-step solution

Given Information  (part a) 

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

Explanation (part a)

The balanced equations are-

$a.{\mathrm{KHCO}}_3\left(\mathrm{s}\right)+\mathrm{HCl}\left(\mathrm{aq}\right)\to {\mathrm{CO}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)+\mathrm{KCl}\left(\mathrm{aq}\right)$

Step 3  ; Introduction (part b )

$b.\mathrm{Ca}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to$

;  Explanation (part b ) 

$b.\mathrm{Ca}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{CaSO}}_4\left(\mathrm{aq}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)$

Step 5  ; Introduction (part c )

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

;  Explanation (part c ) 

$c.{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)+\mathrm{Ca}\left(\mathrm{OH}{)}_2\right(\mathrm{s})\to {\mathrm{CaSO}}_4(\mathrm{s})+2{\mathrm{H}}_2\mathrm{O}(\mathrm{l})$

Step 7  ; Introduction (part d )

$d.{\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to$

;  Explanation (part d) 

$d.{\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{Na}}_2{\mathrm{SO}}_4\left(\mathrm{s}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$