PH SCALE, COLOUR OF PH SCALE, PH RANGE, RED LITMUS PAPER, BLUE LITMUS PAPER, UNIVERSAL INDIACATOR

PH Scale:
PH 1-6 = Acidic
PH 7 = Neutral
PH 8-14 =  Basic

Colour of Ph Scale:
PH 1,2,3,4= Red
PH 5 = Orange
PH 6 = Yellow
PH 7 = Green
PH 8 = Blue
PH 9 = Indigo
PH 10-14 = Violet

Acidic Solution turn (changes) Blue litmus paper red and red litmus paper no change (Red).
Basic Solution turn (changes) Red litmus paper Blue and Blue litmus paper no change (Blue).


Ph of Red cabbage is 7.
Red cabbage contains an anthocyanin-based dye that can be used as a pH indicator.
It is red, pink, or magenta in acids, (pH < 7),
purple in neutral solutions (pH ≈7),
and ranges from blue to green to yellow in alkaline solutions (pH > 7).