blue and red
The colours: Blue and Red mixed together make purple.
red and blue becomes purple. It makes purple.
Blue plus red equals purple
No, Purple without Blue is Red. And conversely, Purple without Red, is Blue.
red, acid is mainly red and alkali is blue/purple neutral is green and it all dpends on the ph of the substance
acidic red, neutral green and alkali purple
In acidic conditions, the color of hibiscus that is initially purple can turn red or pink. This change in color is due to the change in pH affecting the pigments in the hibiscus flower.
Using Standard Ph paper it is bright red. The paper should come with a color scale like so http://jchemed.chem.wisc.edu/jcesoft/cca/CCA3/STILLS/ENDO2/ENDO3/64JPG48/28.JPG
You identify acids and alkalis using indicators. Indicators are substances which turns a particular colour for acids and another for bases. E.g. litmus, (acid-red, alkali-green) and phenolphthalein. Indicators have a certain pH value. You can only use a particular indicator of a suitable pH value for a particular acid-base reaction
ph 8- p14 is a alkali. blue for weak alkali (ph 8) purple for strong alkali (ph14)
A red litmus paper turns blue in the presence of a base/alkali, while a blue litmus paper turns red in the presence of an acid.
Litmus paper is an indicator that changes color in acid and alkali solutions. In an acid solution, litmus paper turns red, while in an alkali solution, it turns blue.
it changes its colour into red.
Litmus paper.
It is Litmus Paper.
Red cabbage is one of many varieties of cabbage grown in temperate regions worldwide. Its juice contains the pigment cyanidin, which is used as a homemade indicator of acids and alkalies because it turns the purple colored juice pink when an acid is added and blue when mixed with an alkali (or colorless in a strong alkali solution).