Salt turns blue when added to lemon juice because it has iodine inside it. When lemon juice is added to iodine, it changes colour.
An acid solution turns blue litmus red.
Blue litmus paper turns red when grape juice is added, indicating that the solution is acidic.
When a base is added to red litmus paper, the indicator turns blue. This is because red litmus paper is used to indicate acidic conditions, so a base would cause the paper to change color to blue.
whenever a litmus paper turns blue to red it means the solution is acidic this definitely means apple juice is acidic
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
Black tea turns red when an acid,(lemon juice) is added and blue when a base(soap solution)is added.
When lemon juice, which is acidic due to its citric acid content, is mixed with bromothymol blue, the indicator changes color. In acidic conditions, bromothymol blue turns yellow. This color change indicates the presence of acidity in the lemon juice, demonstrating how pH indicators can reveal the acidity or alkalinity of a solution.
Lemon juice contains citric acid so blue litmus paper dipped in lemon juice will turn red indicating that it is acidic.Blue litmus paper become red in acidic solutions (lemon juice contain citric acid).
Litmus turns pink in acid solutions like citric acid...blue in basic solutions.
Lemon juice is an acid and blue litmus paper turns red when dipped in an acidic liquid.
Lemon juice is an acid therefore, it turns blue litmus paper red and red litmus paper remains red
some times it turns yellow if you put a bite of water in it
it turns blue
An acid solution turns blue litmus red.
Acids will turn (blue) litmus into red:Remember:with litmusaciD > reDandBase > Blue
Blue litmus paper turns red when grape juice is added, indicating that the solution is acidic.
Blue litmus is turned red by an acidic solution