0. Which among the solutions given below will not show a change in pH on dilution? (I). 0.1 M NH4COOCH3, (II). 0.1 M NaCl, (III). 0.1 M NH4OH, (IV). 0.01 M H2SO4.
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According to me nacl is the answer as it is a salt
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Only the solution of 0.1 M NaCl (salt of a strong acid and a strong base) will not show any change in pH on dilution, as it is completely neutral with a pH value of 7.
Both NH4COOCH3 and NH4OH are weak electrolytes, and their degree of ionization and pH values change with dilution.
0.01 M H2SO4 is completely ionized in solution, but its pH value will increase to 6-7 when its concentration becomes very low.
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