Complete and balance the following reactions: [4 MARKS]
(a) $KCl+H_{2}S{O}_4(conc.)\to$
(b) $Cu+HCl(dil.)\to$
(c) $CuO+HCl(dil.)\to$
(d) $CuO+\left[O\right]HCl(conc.)\to$

Q. Which of the following reactions will not produce $H_2$ gas?
(a) Fe$+$dil. HCl
(b) Zn$+$ dil. HCl
(c) Cu$+$dil. HCl
(d) Ag$+$dil. HCl

Q. Complete the following reactions and balance them: [5 MARKS]
(i) $NaCI+H_{2}S{O}_4\stackrel{<200\circ C}{\to }$
(ii) $NaCI+H_{2}S{O}_4\stackrel{>200\circ C}{\to }$
(iii) $N{H}_3+HCl\to$
(iv) $N{a}_{2}C{O}_3+HCl\to$
(v) $Cu(N{O}_3{)}_2+HCl\to$

Q.

Complete and balance the following reactions, state whether dilute or conc. acid is used.
(a) $N{H}_{4}OH+HCl\to$

(b) $NaHS{O}_3+HCl\to$

(c) $Pb(N{O}_3{)}_2+HCl\to$

(d) $P{b}_3{O}_4+HCl\to$

(e) $Zn+HCl\to$

(f) $Ca(HC{O}_3{)}_2+HCl\to$

Q.

Which is a better electrolyte Dil. HCl or conc. HCl? Explain

Q. Complete the following reaction, balance it and write the name of the products:
$CuO+HCl⟶$ ___________ $+$ ____________.