Is 7 the only neutral pH substance?

Question

So if its 7.1 its considered a base?
and 6.9 an acid?

And does acids have higher concentration of H+(aq) than bases?

Answer 1

A neutral solution is at a pH of 7.00. Basically it has equal concentrations of H+ and OH-. If you think about it, if there are equal concentrations then there are no H+ or OH- ions present to contribute to the acidity or basisity. Therefore a pH of 7.1 is considered a very very weak base and a pH of 6.9 is considered a very very weak acid on the pH scale.

Answer 2

7 is a pH value, not a substance. It represents the concentration of H+ ions in a solution. Specifically, it means there are 1 x10E-7 H+ ions present.

At the same time, there are also 1x10E-7 OH- ions present. So the solution is neutral.

If the pH is 7.1, it means that there is a bit more OH- ions present compared to H+. If the pH is 6.9, there is a bit more H+ ions present.

So a substance with a pH of 7.1 is very slightly basic and 6.9 is very slightly acidic

Answer 3

if you want to get technical then yes 7.1 and 6.9 are considered base and acid...but in general 7.4 and 6.5 are considered neutral, but that's only in circumstances that don't require exact answers (i.e. 11th grade chemistry litmus paper lab) I don't think the teacher cared to much about decimals haha.

Answer 4

ANY substance with a pH of 7.0 is a neutral substance.
Above pH 7.0, towards pH 14 is increasingly Basic..
Below pH 7.0, towards pH 1.0 is increasingly Acidic.