what assumption do we make about the naoh concentration throughout the course of the reactions?

by Dr. Edgardo Jerde DDS 10 min read

What is the order of the reaction between crystal violet and sodium hydroxide with respect to crystal violet?

The individual rate order of the reaction with respect to NaOH and CV was temperature dependent. At 21 °C the rate order with respect to NaOH and CV were 0.24th and 0.76th, respectively.Dec 14, 2020

What is the order of reaction with respect to CV and OH in this experiment?

r(t)=k[CV+] , since the concentration of OH− they used was so much larger than that of CV+ , thus rendering the OH− concentration effectively constant, and the order with respect to OH− effectively zero.May 26, 2017

What is the reaction order with respect to the hydroxide ion?

The reaction is first order with respect to the organic compound, and zero order with respect to the hydroxide ions. The concentration of the hydroxide ions isn't affecting the overall rate of the reaction.

What is the order of the reaction with respect to CV and what is the reaction rate constant k )?

The rate law for this reaction is in the form: rate = k[CV+]m[OH–]n, where k is the rate constant for the reaction, m is the order with respect to crystal violet (CV+), and n is the order with respect to the hydroxide ion.

What effect does changing the concentration of OH have on the reaction?

Increasing the concentration of reactants generally increases the rate of reaction because more of the reacting molecules or ions are present to form the reaction products. This is especially true when concentrations are low and few molecules or ions are reacting.May 12, 2018

What is the effect of NaOH on human eyes?

Skin/Eye Contact Very strong solutions of sodium hydroxide can hydrolyze proteins in the eyes, leading to severe burns and eye damage or, in extreme cases, blindness.

How do you determine the order of the reaction mechanism?

5:5418:48Writing Rate Laws of Reaction Mechanisms Using The ... - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd remember the prefix by means two. So we're dealing with two reactants. One example is a plus aMoreAnd remember the prefix by means two. So we're dealing with two reactants. One example is a plus a turns into b another example is a plus b turns into c.

What is the reaction order m with respect to the concentration of crystal violet explain?

Thus, the order of reaction (m) with respect to crystal violet is first. ... Absorbance is proportional to the concentration of crystal violet (A = εl[CV+]) and can be used instead of concentration when plotting data (A ≈ [CV+]).

How do you determine reaction mechanism?

The sequence of individual steps, or elementary reactions, by which reactants are converted into products during the course of a reaction is called the reaction mechanism. The overall rate of a reaction is determined by the rate of the slowest step, called the rate-determining step.

What is the order with respect to each reactant?

The overall reaction order is the sum of the orders with respect to each reactant. If m = 1 and n = 1, the overall order of the reaction is second order (m + n = 1 + 1 = 2). describes a reaction that is first order in H+, first order in OH−, and second order overall.

What is the order of the reaction with respect to the crystal violet and what is the experimental rate constant?

Upon reaction with NaOH the conjugation gets disrupted and the color is lost. The rate law for reaction (1) is of the form: rate = k [CV+]m[OH–]n, where k is the rate constant for the reaction m is the order with respect to crystal violet (CV+) n is the order with respect to the hydroxide ion.

Is crystal violet and NaOH first order?

In Equations (3) and (4), [CV]o is the concentration of crystal violet in the reaction mixture at time zero, before any reaction has occurred; [CV]t is the concentration at any time t during the course of the reaction. If a plot of ln [CV]t versus time is linear, y = 1 and the reaction is first order in CV.