pH of water is 7.0 at 25 C.if water is heated to 70 C
A)pH will decrease and solution becomes acidic.
B)pH will increase
C)pH will remain constant as 7
D)pH will decrease but solution will be neutral
The correct answer is D. On heating, the extent of dissociation of water increases which leads to the increase in concentration of H+ ions as well as OH- ions. Hence the pH of water decreases, but due to the equal number of H+ and OH- ions, water remain neutral.
Hence, the correct option is D.
Please note the explanation is not in your course and will be dealt in higher grades.
Hence, the correct option is D.
Please note the explanation is not in your course and will be dealt in higher grades.