phenolphthalein in basic solution is an excellent example of second order reaction kinetics. The structure of the colorless form of phenolphthalein (C20H14O4) is complex and not important to this experiment. At a pH of 8 or lower, the structure of …

Phenolphthalein + Sodium Hydroxide = Phenolphthalein Sodium + Water. C20H14O4 + NaOH = C20H12O4Na2 + H2O is a Double Displacement (Metathesis) reaction where one mole of Phenolphthalein [C 20 H 14 O 4] and two moles of Sodium Hydroxide [NaOH] react to form one mole of Phenolphthalein Sodium [C 20 H 12 O 4 Na 2] and two moles of Water [H 2 O]

Two moles of Sodium Hydroxide [NaOH] and one mole of Phenolphthalein [C 20 H 14 O 4] react to form two moles of Sodium [Na], one mole of Cis-4-(8-Hydroxypyren-7-Yl)-2-Oxobut-3-Enoate [C 20 H 12 O 4] and two moles of Water [H 2 O]

Is the reaction of phenolphthalein with hydroxide ions (Equation 2) first or second order in phenolphthalein? 6. Did the temperature of the solution change over the course of the the results of the experiment? 7. The concentration of sodium hydroxide is assumed to be constant throughout the reaction and is thus included in the “reduced ...

In this experiment, three sodium hydroxide solutions with different concentrations will be used to investigate the kinetics of the reaction of phenolphthalein and sodium hydroxide using a custom-made colorimeter.

2024年6月12日 · Phenolphthalein reacts with sodium hydroxide to form a pink color, indicating the presence of a base. The chemical reaction involves the deprotonation of phenolphthalein by hydroxide...

In this work, the reversible reaction of phenol-phthalein with dilute sodium hydroxide solution [7] was studied using a photodiode array (PDA) spectropho-tomer. The internal referencing technique [8] was used to PCA pre-possess the spectral data obtained. and TFA (PCA-TFA) methodology was then applied to deduce the.

In this new rate law, k1 = k2[OH-1]n, and the reaction is said to be “pseudo lst order” in phenolphthalein, the species P-2, if m = 1. If the reaction is indeed first order in phenolphthalein (m = 1) then a plot of ln[P2-] versus time will give a straight line with a slope equal to –k1.

The document describes an experiment to measure the rate of reaction between phenolphthalein and sodium hydroxide. Phenolphthalein changes color from colorless to pink as the pH increases due to deprotonation. The reaction was studied under pseudo-first order conditions with excess sodium hydroxide.

The fading of phenolphthalein is a second order reaction, because the reaction of phenolphthalein (abbreviated P) with hydroxide (OH-) to the colorless compound POH leads to changes in the concentration of both OH-and phenolphthalein: P + OH - → POH. The rate law for this reaction is: rate = v = - k [OH-] * [P]