The lowest pH means the strongest acid.
I do these this way but your teacher may want another method. I hydrolyze each salt.
NaNO2 + HOH ==> HNO2 + NaOH
HNO2 is a weak acid, NaoH a strong base, the solution will be basic.
NaF + HOH ==> HF + NaOH
HF is a weak acid, NaOH is a strong base, the solution will be basic.
Etc.Find the one that is acidic. In case more than one is acidic, the strongest acid will be the one you want.
If each of the salts listed in A through E were dissolved in water to make a 0.1 M solution, which solution would have the lowest pH?
a. NaNO2
b. NaF
c. AlCl3
d. KNO3
e. Na3PO4
1 answer
1 answer