Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest $$pH$$ value?
A.
$$BaC{l_2}$$
B.
$$AlC{l_3}$$
C.
$$LiCl$$
D.
$$BeC{l_2}$$
Answer :
$$BaC{l_2}$$
Solution :
$$BaC{l_2}$$ is a salt of strong acid $$HCl$$ and strong base $$Ba{\left( {OH} \right)_2}.$$ So, its aqueous solution is neutral with $$pH$$ $$7.$$ All other salts give acidic solution due to cationic hydrolysis, so their $$pH$$ is less than $$7.$$
Thus, $$pH$$ value is highest for the solution of $$BaC{l_2}.$$
Releted MCQ Question on Physical Chemistry >> Ionic Equilibrium
Releted Question 1
Molten sodium chloride conducts electricitry due to the presence of