pH scale/values Flashcards
0-2 is coloured ___ in the universal indicator
red
3-4 is coloured ______ in the universal indicator
orange
5-6 is coloured ______ in the universal indicator
yellow
7 is coloured _____ in the universal indicator
green
[neutral]
8-9 is coloured ____-_____ in the universal indicator
blue-green
10-11 is coloured ____ in the universal indicator
blue
12-14 is coloured ______ in the universal indicator
purple
a green colour with universal indicator would have a pH of?
7
an orange colour with universal indicator would have a pH of between?
3-4
a blue colour with universal indicator would have a pH of between?
10-11
a red colour with universal indicator would have a pH of between?
0-2
pH of 0-3 means the solution is ______________
strongly acidic
pH of 4-6 means the solution is ____________
weakly acidic
pH of 7 means the solution is _______
neutral
pH of 8-10 means the solution is _______________
weakly alkaline