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Q.
The $pH$ values of aqueous solutions of which of the following compounds does not change on dilution?
Equilibrium
Solution:
Either buffer to salt of $W_A / W_B$ solutions $pH$ values does not change on dilution
Since in buffer, on dilution both the concentration of $W_A$ or $W_B$ and their conjugate ions change, but their ratio remains same
Hydrolysis of salts of $W_A / W_B$ are independent on the concentration, so their $pH$ values also does not change on dilution