Question
The pair of compounds which cannot exits together in solution is
A.
$$NaHC{O_3}\,{\text{and}}\,NaOH$$
B.
$$N{a_2}C{O_3}\,{\text{and}}\,NaHC{O_3}$$
C.
$$N{a_2}C{O_3}\,{\text{and}}\,NaOH$$
D.
$$NaHC{O_3}\,{\text{and}}\,NaCl$$
Answer :
$$NaHC{O_3}\,{\text{and}}\,NaOH$$
Solution :
$$\eqalign{
& NaHC{O_3} + NaOH \to N{a_2}C{O_3} + {H_2}O \cr
& \left( {NaHC{O_3}\,{\text{is an acidic salt}}} \right) \cr} $$