Why do indicators show intermediate colors

Also which color arrangement would create the. Kazuko has a beach ball. It is colored with six vertical sections, in order: white, orange, yellow, blue, red, and green. She spins the ball, and she notices that the colors whir by very fast. If the first color to go by is white. Why can either phenolphthalein or methyl orange be used for an HCl-NaOH titration, but only phnolphthalein is suitable for an acetic acid-NaOH titration?

Sol: for a while,I misunderstood the question and suggested that Phenol. A bag of balloons contains 2 red balloons, 10 green balloons, 16 yellow balloons, and 7 orange balloons. What is the probability that a randomly selected balloon would be green or orange? Which one of these color combinations is a complementary color scheme A.

Yellow and violet B. Red and yellow D. Yellow,green, and blue. Please help I don't get how to do this! Apr 9, The equivalence point. Related questions How are neutralization reactions useful? How can neutralization reactions be identified symbolically? How does neutralization reaction differ from using a buffer?

How do you do acid base neutralization reactions? When the two forms have equal concentration, the color change is most noticeable.

Colors of substances make the world a wonderful place. Because of the colors and structures, flowers, plants, animals, and minerals show their unique characters. Many indicators are extracted from plants. For example, red cabbage juice and tea pigments show different colors when the pH is different. The color of tea darkens in a basic solution, but the color becomes lighter when lemon juice is added. Red cabbage juice turns blue in a basic solution, but it shows a distinct red color in an acidic solution.

Find an indicator for the titration of a 0. First, you should estimate the pH at the equivalence point, at which the solution is 0. This is a hydrolysis problem, but the following method employs the general principle of equilibrium. Phenolphthalein in the table above has a p K ai value of 9.

A parade of the color intensities is shown below:. The equivalence point is when the color changes most rapidly, not when the solution has changed color. Improper use of indicators will introduce inaccuracy to titration results. Indicators change color gradually at various pH. Let us assume that the acid form has a blue color and the basic form has red color.