A solution of a salt of a weak acid HY is added to a solution of another weak acid HX. Based on the information given above, which of the following species is the strongest base?
(A)HX(aq)
(B)Y−(aq)
(C)HY(aq)
(D)X−(aq)

the strongest base will be A) HX(aq)

Explanation:

The cationic part of the base is formed from the cation in the weak acidic salt solution, (say Na2CO3= HY, and H= Na) i.e H+, whereas the anionic part of the base comes from the the weak base ( say NH4OH= HX, and X= OH-)

Then the strong base formed will be HX

particle   p is an electron and particle q is a neutron