ipl-logo

4-Dinitrophenol Lab Report

602 Words3 Pages

This paper talks about what effect the reaction speed when 2,4-dinitrophenol (24-DNP) is going to be decomposed by nature light. In an aqueous environment, decomposition speed of 24-DNP is significantly slower than which dissolved in secondary organic material (SOM) which generated through a-pinene. Low temperature also do great effect to this reaction in organic solvent. Author make a assumption that the increase of viscosity,due to low temperature, suppresses the moment of atom reaction.The temperature, the matrix structure and the viscosity are first time be reported. The result will increasing the research of reaction between 24-DNP and nitro-aromatic modular and the research of their effect on environment.
Background information …show more content…

Secondly, the difference in photochemical rates in different organic media. The mechanism of photochemical reaction shows that the matrix is key point.Same matrix will result in same reaction product. But the effect of temperature in different system is different. In octanol the temperature do little effect. But in SOM the temperature effects is obvious. Even their matrix is like the same. The author assuming that because DNP cannot easily abstract a hydrogen atom from surrounding SOM because it loses its energy in low temperature.
And the viscosity changes and the function of temperature is connecting. Viscosity will effects the activation energy which will effects the reaction rate. In SOM the viscosity is lower so the reaction rate is significantly higher. In low temperature the viscosity of
SOM ’s increase directly effect the photochemistry of DNP speed and make it decrease significant fast.
The research in this area proofs that the photochemistry is concerning viscosity and will decrease in high viscosity material. And it makes an assumption about the mechanism of photochemistry in atmosphere. Glassily and high viscosity areo-gel particle

Show More
Related
506 Words | 3 Pages

Tn 4351 was originally isolated from bacteroides fragilis [30] . The transposon was successfully introduced into Cytophaga succinicans, Flavobacterium meningosepticum, Flexibacter canadiansis, Flexibacter strain SFI and Sporocytophaga myxococcoides by conjugation [25]. Tn 4351carries two antibiotic resistance gene. One of the codes for resistance to erythromycin and clindamycin which is expressed in bactroides but not in E.Coli. The other gene codes for resistance in tetracycline and is expressed in aerobically grpwn E. coli, but not in anaerobically grpwn E. coli or in bacteroides.

Read More
2033 Words | 9 Pages

Chem 51LB Report Ngoc Tran - Student ID # 72048507 The purpose of this lab is to examine the composition of three components of gas products of elimination reaction under acidic condition by conducting the dehydration of primary and secondary alcohol, and under basic condition by conducting the base-induced dehydrobromination of 1-bromobutane and 2-bromobutane. Then gas chromatography is used to analyze the composition of the product mixtures. Gas chromatography (mobile phase) is used to analyze the composition of three components of the gas products. A syringe needle with gas product is injected into the machine, and the component is eluted and the composition is related to the column or the peaks.

Read More
824 Words | 4 Pages

1. Introduction The objective of the experiments was to determine the identity of an unknown compound in order to properly dispose it. The process of disposal is very important when dealing with chemicals. Some chemicals are very

Read More
79 Words | 1 Pages

How is temperature related to this reaction? The higher the temperature the slower they move.

Read More
920 Words | 4 Pages

Observations The purpose of this experiment was to be able to synthesize triphenylmethyl bromide from triphenylmethanol by a trityl carbocation intermediate. During the experiment, 0.100 g of triphenylmethanol was placed into a small test tube. The triphenylmethanol looked like a white powder. Next 2 mL of acetic acid was added to the test tube and the solution turned a cloudy white color.

Read More
382 Words | 2 Pages

Nevertheless, the latter is not used in this experiment since it is very reactive and extremely flammable. On the contrary, NaBH4 is relatively mild and it can be used with protic solvents. In this manner, 1.507 grs of the ketone 9-fluorenone were mixed with 30.0 ml of 95% ethanol in a 125 ml Erlenmeyer flask. The bright yellow mixture was stirred during 7 minutes until all the components were dissolved.

Read More
433 Words | 2 Pages

Experiment 3 comprised three reactions: formation of dimethyl tetraphenylphthalate, hexaphenylbenzene, and tetraphenylnaphthalene. All 3 reactions used tetraphenylcyclopentadienone as the diene to generate products with high aromatic stabilization. The first reaction was the formation of dimethyl tetraphenylphthalate. A cloudy white solid was formed with 31.1% yield.

Read More
779 Words | 4 Pages

Benzyne Formation and the Diels-Alder Reaction Preparation of 1,2,3,4 Tetraphenylnaphthalene Aubree Edwards Purpose: 1,2,3,4-tetraphenylnaphthalene is prepared by first producing benzyne via the unstable diazonium salt. Then tetraphenylcyclopentadienone and benzyne undergo a diels-alder reaction to create 1,2,3,4-tetraphenylnaphthalene. Reactions: Procedure: The reaction mixture was created. Tetraphenylcyclopentadienone (0.1197g, 0.3113 mmol) a black solid powder, anthranilic acid ( 0.0482g, 0.3516 mmol) a yellowish sand, and 1,2-dimethoxyethane (1.2 ml) was added to a 5-ml conical vial.

Read More
1764 Words | 8 Pages

Anderson and Wood (1925) determined a magnification value equal to 2800 but they neglected the deformation of the tungsten wire under different equilibrium situations. Conversely, the deformation of the wire could be sufficient to reduce the magnification factor of 30%, increasing the moment of inertia. For this reason Uhrhammer and Collins (1990) and Uhrhammer et al. (1996) recomputed the instrument static magnification (GS) that was estimated equal to 2080 ± 60. Using 2800 instead of 2080 in the BB WA simulations leads to a magnitude error of +0.129 (e.g. Uhrhammer et al., 2011).

Read More
603 Words | 3 Pages

Suppose we have a single-hop RCS where there is one AF relay that amplifies the signal received from a transmitter and forwards it to a receiver. Assume that the transmitter sends over the transmitter-to-relay channel a data symbol ${s_k}$, from a set of finite modulation alphabet, $S={S_1, S_2,ldots,S_{cal A}}$, where ${cal A}$ denotes the size of the modulation alphabet. The discrete-time baseband equivalent signal received by the relay, $z_k$, at time $k$ is given by egin{equation} z_k = h_{1,k}s_k + n_{1,k},~~~~for~~k=1,2,ldots,M label{relaySignal} end{equation} where $n_{1,k}sim {cal N}_c(0,sigma_{n1}^2)$ is a circularly-symmetric complex Gaussian noise added by the transmitter-to-relay channel, $h_{1,k}$ denotes the transmitter-to-relay channel, and

Read More
407 Words | 2 Pages

• Write down the highlighted numbers. Do you observe a pattern? • Does the pattern grow? What is the reason for this? • Write down the last number (say 53).

Read More
155 Words | 1 Pages

Suppose you need to find the fractional European call and the fractional European put options. Let the Hurst parameter be $H=0.85$, the $\sigma=0,25$, $r=0.10$, $S_{fbm} = 100$, $K = 95$, we have \begin{eqnarray*} d_1^{fBm} & = & \frac{\ln{\frac{S}{K}} + \frac{1}{2}(r( T - t) + \frac{(1)\sigma^2{( T^{2H} - t^{2H})}}{2})}{\sigma{\sqrt{T^{2H} - t^{2H}}}}\\ & = & \frac{\ln(\frac{105}{100}) + (0.10(0.25 -0) + \frac{(1){0.25^2}{0.25^{2(0.85)} - (1)0.25^{2(0.85)}}}{2}}{(0.25){\sqrt{0.25^{2(0.85)} - 0}})} \end{eqnarray*} we obtain $d^{fBm}_1= 1.0558$. We find in the normal distribution that $N(1.0558)= 0.8544$ and $N(-1.0558) = 0.1456.$

Read More
1529 Words | 7 Pages

Wilfrid Laurier University, ON, Canada. Observation Results: Table 1: Qualitative Observations of all reactants and products in experiment Reactant/ Product Before During

Read More
2022 Words | 9 Pages

1. A) Show that the relation R over bit strings where (x, y) is in R if and only bit strings x and y length 16 that agree on their last 4 bits is an equivalence relation. Define the equivalence classes and the partition induced by R. Answer: A relation R is said to be an equivalence relation if and only if it has all the following three properties: • Reflexive • Symmetric and • Transitive

Read More
1039 Words | 5 Pages

Experiment 2 Report Scaffold (Substitution Reactions, Purification, and Identification) Purpose/Introduction 1. A Sn2 reaction was conducted; this involved benzyl bromide, sodium hydroxide, an unknown compound and ethanol through reflux technique, mel-temp recordings, recrystallization, and analysis of TLC plates. 2. There was one unknown compound in the reaction that was later discovered after a series of techniques described above.

Read More

More about 4-Dinitrophenol Lab Report

Related Topics

Open Document