ipl-logo

Photochemical Decomposition Of Rose Bengal Lab Report

998 Words4 Pages

MELTING POINT: It’s melting point is approximately 300 °C. BOILING POINT: It’s boiling point is 757 °C at 760 mmHg DENSITY: Density of Rose Bengal is 2.88 g/cm3 VAPOR PRESSURE: It’s vapor pressure is 3.91E-24mmHg at 25 °C. REFRACTIVE INDEX: Refractive index of Rose Bengal is 1.916. MECHANISM OF DECOMPOSITION AND IT’S BY PRODUCT Photochemical decomposition of Rose Bengal is carried out in various ways. Here rose Bengal is decomposed using FE(III)-montmorillonite reductant. For the photo-chemical degradation of Bengal, sulphites like additives are being used, but in such circumstances, very less rate of degradation of Bengal is observed approximately about fifty percent. To control the mobilization or movement, adsorption of rose Bengal, in some aqua media or aqueous solution, iron based a mineral clay is being used for the degradation of Rose-Bengal. The rate of adsorption of Rose Bengal increases with increase in amount of Fe(III) Mt. Concentration of Rose Bengal dye was estimated through UV-V spectrophotometer at an absorbance of 545 nm. Complete decomposition of Rose Bengal was seen in acidic medium means in pH of five or may be 6, in the presence of Fe, time of decomposition occurred in 3 minutes only. At 7, pH or in basic medium, decomposition rate when measured was …show more content…

Under light by the excitation of triplet of riboflavin and the triplet of oxygen annihilation mechanism, a singlet oxygen which is derived from the triplet of oxygen plays an extremely important part in the photo-sensitized reactions. When the riboflavin molecule absorbs energy or light, it becomes excited. If singlet of riboflavin is excited it’s life will be 5 ns and if triplet of riboflavin is excited its life will be 1 ns. Photo reduction, photo addition is the type of reactions which are involved in photo-chemical degradation. these may be between molecules or within the molecule, it occurs rapidly and

Show More
Related

  • Procion Red Dye Lab Report

    1454 Words  | 6 Pages

    For this lab, zeolite and magnetized zeolite were synthesized and compared with charcoal to find out with would be the most effective in the sequestering of Procion Red dye. Finding the concentration and absorbance of each zeolite, magnetized zeolite, and charcoal, along with a calibration curve, the best adsorbent is determined. Charcoal was the overall best sequestration of the Procion Red dye, since the adsorbent was highest compared to the others. Introduction Pollution has increased in the environment over the years, so the purpose of this experiment is to find the best adsorbent of chemicals to reduce the pollution.

    Read More

  • Nt1310 Lab 6

    575 Words  | 3 Pages

    Answer # 2: During a diffusion jump, the interstitial atom transfers from one octahedral place to another. Midway between these two places, it is bounded by 4 atoms all at equivalent spaces from the foreign atom.

    Read More

  • Ap Biology Review Sheet

    855 Words  | 4 Pages

    concentration gradient- When there’s lots of molecules of something they will move to the area where there’s less molecules until the amounts are equal. 11. countercurrent exchange- when two fluids flowing in reverse directions transfer a substance to each other. 12. diffusion-

    Read More

  • Gen 1051 Final Lab Report

    813 Words  | 4 Pages

    Our latest lab covered a detailed description of atoms and molecules, laid out in a distinctive way using balls and sticks for valence electrons and bonds. We were given charts to fill out recoding our findings regarding several molecules and their electron count, type of bonds,

    Read More

  • Chemical Change Lab Report

    432 Words  | 2 Pages

    For this lab the knowledge to tell the difference between a chemical and physical changes was needed. To tell this the knowledge of the five signs of a chemical change was needed. These five signs are color change, odor change, production of bubbles/gas, production of heat/light, and the production of precipitate. Also prior to the lab one question was provided that needed to be answered. This question was what chemical must be present for a color change.

    Read More

  • Alka-Seltzer Experiment

    853 Words  | 4 Pages

    Some factors that influence the speed of a chemical reaction are: (1) surface area of starting reactants; (2) concentration of reactants; (3) temperatures. The particle theory states that a solute dissolved takes place at the surface of the solvent and the larger the surface area of the particle the longer it will take to dissolve. The smaller the area the faster it will

    Read More

  • Unknown Compounds

    469 Words  | 2 Pages

    In this lab, three unknown compounds were separated from a mixture and identified by melting point. Unknown mixture #124 has components of acid, base and neutral compound. The compounds were identified by melting point and matched up with the known melting points from a given list. In order to identify the compound it was important to separate by dissolving the mixture in an organic solvent which was not soluble in water, and then extracting the solution first with HCl, and then dilute sodium hydroxide solution. From the separation mixture, the aqueous layer were obtained and labeled as TT-1 (base), TT-2(acid) and TT-3 (neutral) in three different test tubes for later recovery.

    Read More

  • 2-Bromobutane Lab Report

    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

  • Rose Water Analysis

    621 Words  | 3 Pages

    Essay personifying a pen Rating 6/7 Voted 852 Person (s) free college essay Rosewater a 1965 novel about a philanthropic organization gone wrong. In it, Vonnegut famously writes : Hello, babies. Wele to Earth.

    Read More

  • Catechol Oxidase Lab Report

    642 Words  | 3 Pages

    There are few vegetables and fruits that turns to the color brown if their surface is exposed to oxygen. Once the veggies or fruits been exposed to oxygen, then the browning begins to appear, and electrons and hydrogen will be removed. This happens because of an enzyme called catechol oxidase. The enzyme will act on its substrate catechol to form a yellow compound which then reacts with the oxygen in the air and change into benzoquinone. The more concentration of the enzyme, the more browning appears.

    Read More

  • Analysis Of The Glass Roses By Alden Nowlan

    195 Words  | 1 Pages

    Alden Nowlan's short story, The Glass Roses, creates a melancholy tone with a contemplative mood. The setting of a rural sawmill, the rough atmosphere of those that surround Stephen, and his inner conflicts play a significant role in creating such mood and tone. Nowlan paints a picture of their surroundings being "a maelstrom of darkness" (Nowlan 5) and speaks to how "the wind...was still raw enough to lacerate [his] temples" (Nowlan 2) emphasizing the unforgiving nature of their job. Such imagery could also be a reflection of Stephens's inner turmoil as he struggles to belong amongst the men and his world too is "a maelstrom of darkness" all of which contributes to the melancholy tone. Further, Stephen's struggle to belong and conform contributes

    Read More

  • Alka Seltzer Experiment

    794 Words  | 4 Pages

    Introduction During this lab, students observed that not all substances dissolve at the same rate. Many factors involved including the independent and dependent variables affect how distinct substances dissolve. Overall, the chemical reaction, “the amount of reactant that changes the product in a given time”, played an important part in this experiment, when proven how a substance can change into another element by either emitting or absorbing energy. (Tro, 2018).

    Read More

  • Spontaneous Healing Summary

    1300 Words  | 6 Pages

    In Hindu religious mythology the tree is adored as the Earth Mother as its natural product is thought to be so feeding as to be the medical attendant of humankind (Onions,1994). In India, it is regular to eat gooseberries saturated with salt water and turmeric to make the harsh natural products satisfactory. There are two assortments of Amla - developed (gramya) and wild (vanya). The wild amla is little, while developed amla is huge, smooth and succulent. Synthetic creation of the amla natural product contains over 80% of water.

    Read More

  • How Does The Concentration Of Water Affect The Preparation Of Nacl Rates

    1864 Words  | 8 Pages

    The boiling-point elevation can be calculated by this

    Read More

  • Properties Of Substances Lab Report

    1038 Words  | 5 Pages

    Properties of Substances Express Lab 1)The purpose of this lab was to compare the physical properties of different types of solids and how the properties of solids are determined by their intermolecular forces and their intramolecular bonds. Then we were to classify each type of solid as either ionic, metallic, non-polar molecular, polar molecular, or network. Paraffin wax classified as a non-polar molecular, Silicon dioxide was classifies as a network, Sodium chloride was classified as ionic, Sucrose was classified as polar molecular and Tin was classified as metallic. (2)The intermolecular forces that are present in Paraffin wax are dispersion forces, because it is non-polar and carries a negative charge. Followed by Sucrose that has

    Read More

More about Photochemical Decomposition Of Rose Bengal Lab Report

Open Document