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Phenolphthalein is the PH indicator used to detect the acidity of the solution. When the solution is acidic or near-neutral (PH<8.2), it's colorless; when the solution is basic (8.2<PH<10.0),it will turn from colorless to pink, and gradually turns fuchsia when PH reaches 12.0, back to colorless when overpasses 12.0.
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What pH values indicates a solution with the highest concentration of hydrogen ions pH equals 1 or pH equals 2 or Ph equals 7or pH equals 14?
pH = 14 is basic pH = 7 is neutral pH - 1 and 2 are acidic; pH = 1 is more acidic than pH = 2 Therefore a solution at pH 1 has higher concentration of H+ than at pH 14
What substances would be least acidic pH equals 2ph equals 3ph equals 6ph equals 1or pH equals 4?
the least acidic would be the one closest to the neutral pH number of 7 (which is the pH of pure water, NOT salt water... salt water is slightly acidic i THINK due to salt content). so in the case given in ur question, the least acidic would be the substance with pH level of 6.
Does a solution that has pH equals 7 has the same concentration of hydronium ions as a solution that has pOH equals 7?
Yes, if both solutions are at 25oC then in both solutions this is valid: pH + pOH = 14.0
True or false pH equals -log H3O plus?
True
What is the pH of a solution that has hydrogen equals 2.3 x 10-4?
Molarity of hydrogen solution equals 2.3 X 10^-4 -log(2.3 X 10^-4) = 3.6 pH
How does phenolphthalein work?
Phenolphthalein is an indicator that undergoes a colour change from colourless to pink that begins at a pH of 8.0. So in the titration your performing the phenolphthalein will start to change colour at the point when the moles of acid equal the moles of base. Although this colour change occurs at a pH of 8.0 and not at a pH of 7.0 phenolphthalein is commonly used because of the distinctive colour change that occurs. Phenolphthalein is colourless in acids and pink/purple in base. It also turns orange in very strong acids.
What color does phenolpthalein turn in the presenc of an acid?
Phenolphthalein only gives colour to bases with a pH above approximately 8.2-10. Then it gives a pink colour. As HCL is a strong acid it becomes colourless.
When does phenolphthalein turn pink?
Phenolphthalein in acidic titrations,turns colorless and pink in basic solutions.
What will happen when phenolphthalein paper is used to test a base?
It will change its colour from white to red on increasing the pH(for bases)
What colour does hydrochloric acid turn phenolphthalein?
It should be clear. Phenolphthalein doesn't change color in the presence of an acid, only a base.
Why you are adding phenolphthalein as a indicator?
One would add phenolphthalein as an indicator for bases with a pH of 8.2 to 10.0 If the phenolphthalein changes color from colorless to pink or red, a base with a pH between the aforementioned pH values is present.
What colour does tomato juice turn phenolphthalein?
The litmus paper turns Orange. Because it has a pH of 4 so it's orange. :)
Is phenolphthalein the indicator used in the titration of Na2CO3 against HCl solution?
Type your answer here... Phenolphthaelin indicator changes its colour at 8.3 pH. But the end point of this reaction is at pH 7. In weak base Strong acid case the curve gives sharp change from 3.2 to 6.0 pH. Hence phenolphthalein indicator will not be advicable.
What is the color of phenolphthalein indicator in acidic medium?
it goes colourless in an alkiline soloution but in an acidic substance it goes a fushia pink colour! You are WRONG! The solution will be colourless at acidic and neutral pH and goes pink above about pH 8, I hope you aren't a science teacher.
What is the colour change in the titration of NaOH and C2H2O4 if using phenolphthalein as an indicator?
Adding NaOH-sol'n to oxalic acid, C2H2O4, the colour (from colorless) has to become purple-blue at pH 8 to 10.
Formula and pH of phenopthelin?
Phenolphthalein is a sensitive pH indicatorwith the formula C20H14O4
What does an acid base indicator measure?
It indicates that the solution's range is above or below of its transition value. For example the transition value of phenolphthalein is around 9.0. Hence it shows a pink colour in basic solutions (pH>9) and colourless in acidic solutions.
