Phenolphthalein is an indicator often used in chemical titrations. Phenolphthalein is colorless in acidic solutions and turns pink in basic solutions. The more basic the solution the pinker the solution will become when Phenolphthalein is present.
phenolphthalein is used to tell the acidity/how alkaline a substance is. As water tends to not be either alkaline or acidic [if it's polluted, that's another matter...] the colour of the phenolphthalein won't change.
A pink color in a solution with phenolphthalein indicates that the solution is basic. In acid phenolphthalein solutions, the solution will turn colorless.
Basic/alkaline solutions turn phenolphthalein pink.
the colour is pink in basic medium
No reaction takes place. pH of the solution increase.
The following reaction occurs H2SO4 + 2NH4OH --> (NH4)2SO4 + H2OSulphuric Acid + Ammonium Hydroxide --> Ammonium Sulphate + WaterThis is a neutralization reaction.
Ammonia gas get dissolved in water which form ammonium hydroxide. NH4OH is alkaline in nature. so when phenolphthalein is added to it. It produce PINK colouration.
Phenolphthalein is the indicator to see if it is more acidic or more basic
Phenolphthalein dissolves in water to get a clear transparent solution.
What is the evidence for a shift in equilibrium's when ammonium chloride was added to the stock solution in hydroxide phenolphthalein? In: http://wiki.answers.com/Q/FAQ/2455 [Edit categories]
maroon maroon
No reaction takes place. pH of the solution increase.
It Turns Pink.
The following reaction occurs H2SO4 + 2NH4OH --> (NH4)2SO4 + H2OSulphuric Acid + Ammonium Hydroxide --> Ammonium Sulphate + WaterThis is a neutralization reaction.
Ammonia gas get dissolved in water which form ammonium hydroxide. NH4OH is alkaline in nature. so when phenolphthalein is added to it. It produce PINK colouration.
When Ammonium Hydroxide is added to ferrous sulphate solution a DIRTY GREEN PRECIPITATE of Fe(OH)2 is formed. FeSO4 + 2NH4OH = (NH4)2SO4 + Fe(OH)2
if the ion that is already with the hydroxide is stronger which is general the case, ammonium hydroxide and a metal sulfate will me formed.
Phenolphthalein is the indicator to see if it is more acidic or more basic
At a particular point, the color of the indicator would change from colorless to pink (purple).
Phenolphthalein dissolves in water to get a clear transparent solution.
NH4Cl + NaOH ---> NaCl + NH4OH