Why does a ph of 7 represent a neutral solution at 25°c?
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its bc its neutral a ph of 7 is neutral and the tempurature for a neutral subs is 25-50 degrees C

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7 is a neutral level of ph

Neutral levels of ph have temperatures ranging from 25-50c

So a ph of 7 at 25c makes sense.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

c

explanation: