Which of the following is true of all pH indicators?
they all have different colors in acid solutions than in basic solutions
they each have a characteristic pH at which they change color
they are papers which have been soaked in specific compounds
Answer:
They all have different colors in acid solutions than in basic solutions
Otherwise how would they indicate anything?
c
they each have a characteristic pH at which they change color. pH indicators are used for specific pH range
"they all change color at pH = 7"
No, 7 is the neutral point so they should not change
"they all have different colors in acid solutions than in basic solutions"
Well, this is not necessarily correct. They should change color when they are basic or acid. But it is not like if they are a raibow
"they each have a characteristic pH at which they change color"
Of course! <7 and >7 :)
"they are papers which have been soaked in specific compounds"
Well, I don't think all of them are like that.
D, and B
it depends on what you're asking.
They are special papers, they will either go more red, or more blue, depending on more acetic, or more basic. In order.
so B will be what i pick.
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