What does phenolphthalein do in a neutral solution? Phenolphthalein is an indicator — a chemical which changes colour depending on whether it meets an acid or a base. It turns purple if it meets something basic, such as ammonia; it stays colourless if it meets an acid like vinegar or a ...
Phenolphthaleinis a colourless, weak acid which dissociates in water forming pink anions. Under acidic conditions, the equilibrium is to the left,and the concentration of the anions is too low for the pink colour to be observed. How does EDTA react with calcium? As a result, whenthe calcium...
What will be the color of a nitric acid solution when the indicator phenolphthalein is added? What does the color indicate about the strength of an acid or base? Which of the following statements does not correctly describe a basic solution? a) The solution has a pH less tha...
The redox grafting method has been used for the preparation of PRM from a novel polymeric material (membrane material), phenolphthalein poly(ether sulfone), and methylacrylic acid (functional monomer) [15]. The redox system potassium persulfate (K2S2O8)-sodium sulfite (Na2SO3) was used for the...
Reason (R): IN the titration of strong acid and strong base, the equivalence points lies is the pH range of (3.0−10.5) and phenolphthalein have pH range of (8.0−9.8). View Solution (a). IF both (A) and (R) are correct and (R) is the correct explanation of (A). (b)...
If your t-shirt absorbs red light, what colour will it appear under sunlight? A) Impossible to know without a spectrophotometer B) Red C) Yellow D) Green An acid solution is titrated to the pink phenolphthalein endpoint by a base solution. As time goes by, th...
Acid-base indicator such as methy1orange, phenolphthalein, and bromothymol blue ate substances which change colour accroding to the hydrogen ion concentration of the solution to which they are added. Most indicators are weak acids (or more rarely weak base) in which the undissociated and dissociate...
what is the original color of Phenolphthalein solution? pink or colourless? During osmosis, water moves toward the solution with the ___ solute concentration. What kind of bonding does water consists of? An acid is a salt, so when it is exposed to water, what does it release? How can ...
NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
When setting up their experiment, a student discovered that the solution in their flask turned bright pink upon adding 2 drops of the indicator, even before beginning the titration. What do you suspec An acid solution is titrated to the pink phenolphthalein endpo...