iran-konkur 2024 Q96

iran-konkur · Other · konkur-riazi_1403_ordibehesht_specialized Not Maths
96 -- Which statement about formic acid solution (Solution I) and acetic acid solution (Solution II) is correct?
(1) At constant temperature, if the concentration of solution (I) is less than the concentration of solution (II), the pH of solution (II) is certainly higher than the pH of solution (I).
(2) At constant temperature, if the pH of the two solutions is equal, the number of molecules of solution (I) is greater than the number of molecules of solution (II).
(3) By diluting each of the two solutions to the same extent, the degree of ionization of both acids increases by less than one fold.
(4) At different temperatures and concentrations, both solutions can react completely with sodium hydroxide.
\textbf{96 --} Which statement about formic acid solution (Solution I) and acetic acid solution (Solution II) is correct?

(1) At constant temperature, if the concentration of solution (I) is less than the concentration of solution (II), the pH of solution (II) is certainly higher than the pH of solution (I).

(2) At constant temperature, if the pH of the two solutions is equal, the number of molecules of solution (I) is greater than the number of molecules of solution (II).

(3) By diluting each of the two solutions to the same extent, the degree of ionization of both acids increases by less than one fold.

(4) At different temperatures and concentrations, both solutions can react completely with sodium hydroxide.