PH indicator Essays

  • Neutralisation Lab Report

    1098 Words  | 5 Pages

    Introduction: In this experiment acid base indicators will be tested, using a red cabbage mixture. Substances can be classified as acidic or alkalinic depending on the concentration of hydrogen or hydroxide ions. The higher the concentration of hydrogen ions the lower the pH this means it will be an acid and the higher the concentration of hydroxide ions the higher the pH this means it will be an base(science prof online). A pH indicator is a solution or mixture that changes colour in the presence

  • Water Equilibrium Experiment

    1053 Words  | 5 Pages

    excess. Definition of pH, pOH, and pKw: The concentrations of hydrogen ions and indirectly hydroxide ions are given by a pH number. pH is defined as the negative logarithm

  • Titration Of Hydrochloric Acid

    1111 Words  | 5 Pages

    This method is very dangerous because the solution can be swallowed accidentally which can be harmful. The 25ml in the pipette were poured into the conical flask, then three drops of Phenolthalein indicator were added to the conical flask. Phenolthalein is clear in acid and red in base, so when the has pH 7 the phenolthalein will turn to pink. This is an indication that the solution reached the equilibrium point and all the acid reacted with the base. So after the phenolthalein drops were added to

  • Acetic Acid Lab Report

    1479 Words  | 6 Pages

    calculated using the M 1 V 1 = M 2 V 2 relationship. It was then gradually added to the vinegar solution until the acid-base reaction was completely neutralized. To regulate the reaction, phenolphthalein, an acid-base indicator, was added beforehand to the vinegar (analyte). The indicator will change its color, signaling that the end point is obtained and the volume of NaOH used can now be measured. The experiment was carried out in three trials. Trial 1 showed a 0.0115 L of NaOH while a 0.012 L in trial

  • H Pylori Case Study

    1642 Words  | 7 Pages

    limitation of every diagnostic test to detect H.pylori.(1, 2) Test Principal Advantage Limitation Rapid urease test In the presence of H. pylori urease, urea is metabolized to ammonia and bicarbonate resulting in an increase in pH, which changes the color of a pH-sensitive indicator. Tests for active H. pylori infection; >90% sensitivity and specificity. Results are rapid (within 24 hours), and test is less expensive than histology or culture. Withhold H2RAs and PPIs 1 to 2 weeks before testing and antibiotics

  • Essay On Animal Environment

    1407 Words  | 6 Pages

    All organisms have five basic needs, which include sunlight, water, air, food and a habitat. An environment that has all these basic needs is guaranteed to have animal life. However, animals have tolerance ranges, meaning, they do not all need the same amount of these basic needs. Some need more of one than another, and other need less. At the end of the day, every animal wants to be comfortable in their environment that favour their physiological and behavioural characteristics. It is every animal’s

  • Sulfurine Lab Report

    1104 Words  | 5 Pages

    Preparation of Polyaniline Solution. To obtain polyaniline solution, prepare 0.12M aniline solution by adding 2 ml of aniline into 200 ml of 1 M sulfuric acid. Start with 98% purity sulfuric acid, 10.8784 ml of 98% sulfuric acid is added to 200 ml distilled water to obtain 1 M sulfuric acid. 0.12 M aniline solution can be created by adding 2 ml of aniline and 200 ml of 1 M sulfuric acid. Refrigerated the solution for a night to let the polyaniline solution form nanotube structure. Preparation of

  • Allyl Iso-Thiocyanate Lab Report

    760 Words  | 4 Pages

    • Water bath Reagents: • Ethyl alcohol- 95% (by volume) or rectified spirit conforming neutral to phenolphthalein. • Silver nitrate solution - approximately 0.1N. • Ammonium hydroxide solution- 10% (w/v) • Nitric acid • Ferric ammonium sulphate indicator - 0.1N% Solution in water. • Standard ammonium thiocyanate solution - approximately 0.1N. Procedure: 1. Weigh accurately about 5g of the mustard oil in a 500ml distillation flask. 2. Add to it 250 ml of water, 25 ml of ethyl alcohol, and a few

  • Cefuroxime Axetil And Linezolide Lab Report

    1088 Words  | 5 Pages

    ASSAY: Preparation and analysis of Tablet: For analysis of Cefuroxime Axetil and Linezolid in tablet, twenty tablets (Oratil LZ) which contain 500 mg of Cefuroxime Axetil and 600 mg of Linezolid was taken .Powder weight equivalent to 10 mg of drug was dissolved in a 100 ml volumetric flask and made up to half mark with ACN. It was sonicated till drug dissolve and was made up to mark with methanol (Stock solution). The Stock solution contains 100 μg/ml Cefuroxime Axetil of and 120 μg/ml of Linezolid

  • Essay About Orange Fruit

    808 Words  | 4 Pages

    Chapter 2 REVIEW OF RELATED LITERATURES AND STUDY Related Literatures Orange tree is mostly cultivated and rarely found in forests. It was first cultivated in Southern China and Northeastern India. Orange, the tasty, juicy fruit belonging to the family Rutaceae, in division Magnoliophytra, in class Dicotyledons and in order Rosidae (Botanical classification) is botanically known as Citrus sinensis. C. sinensis is one of the most important and widely grown fruit crop, with a total global production

  • Ionic Bonding Lab Report

    1042 Words  | 5 Pages

    Unit 3: Formation of ionic and metallic bonds Key unit competence: Describe how properties of ionic compounds and metals are related to the nature of their bonding 3.1. Introduction  Activity 3.1 Look at the pictures above and answer the following questions. Record your answers and discuss them in your groups. 1) Observe carefully pictures A, B and C and suggest the similarity between them. 2) What can you say about the chloride and sodium ions in the pictures above? 3) What holds the chloride

  • Essay On Alkaline Water

    1195 Words  | 5 Pages

    alkaline water, we must first refer to the concept of PH (Potential Hydrogen) of a liquid. When we speak of PH we are referring to the concentration of hydrogen ions. The index of PH is measured on a scale from 0 to 14, with 7 being neutral value in the table, below 7 would be talking about an acidic medium and more amount of free hydrogen ions, while above 7 would be alkaline. Within this scale, pure water, in its normal state has a neutral PH, equal to 7, neither acidic nor alkaline, meaning it

  • Difference Between Bleach And Vinegar

    764 Words  | 4 Pages

    Question Once the pH level of various water sources, namely: swimming pool water, tap water, mineral water, river water and sea water has been established, will the pH level increase at the same rate for each water source when adding the exact amount of bleach to each and decrease at the same rate when adding the exact amount of vinegar to each? Hypothesis I believe that the pH balance will not increase or decrease at the same rate due to the various chemical components already in each water source

  • Hurdle Technology Case Study

    1348 Words  | 6 Pages

    application in the preservation of food products: 2.4.1 Dairy products: - The shelf life of dairy products can be improved with the application of hurdle technology. For example, Paneer can be preserved by incorporation of different hurdles like pH, aw, preservatives and modified atmosphere packaging (MAP).Hurdle treated Paneer is stable from the one to twelve days at room temperature and six to twenty days at refrigeration temperature. The sensory and chemical characteristics of Paneer will remain

  • Production Diclofenac Acid Reaction Lab Report

    851 Words  | 4 Pages

    Production diclofenac acid (DFA) by diclofenac sodium (DFS) hydrolysis DFA which yielded from DFS hydrolysis was characterized by FT-IR and DTA. Fig. 2 showed the information provided by the spectra FT-IR profile, which distinguished DFS from DFA. The DFA’s spectra showed a specific absorption peak at 3324 cm-1 which correspond to free OH stretching of a carboxylic group. Free acid was also presented as a peak at 1693 cm-1 associated with C=O stretch and 1157 cm-1 correspond to the C-O stretch

  • Grapefruit Juice Case Study

    831 Words  | 4 Pages

    This bioflavonoid is difficult to absorb on oral ingestion. In the best-case scenario, only 15% of ingested naringenin will get absorbed in the human gastrointestinal tract. The naringenin-7-glucoside form seems less bioavailable than the aglycol form. Grapefruit juice can provide much higher plasma concentrations of naringenin than orange juice. Also found in grapefruit is the related compound kaempferol, which has a hydroxyl group next to the ketone group. Naringenin can be absorbed from cooked

  • Terminalia Talisay Case Study

    832 Words  | 4 Pages

    Introduction Terminalia catappa L. also known as Talisay belongs to the family of Combretaceae. It is a deciduous shady tree often grown in the Philippines for ornamental purposes. Its natural habitat is commonly found in areas just inland from ocean beaches. The leaves and the fruit of Terminalia catappa L. is known to be beneficial in different ways. The leaves mixed with oil can cure pain, also applied as a remedy for certain bacterial diseases and the juices of the young leaves are employed

  • Pomegranate Fruit Case Study

    1250 Words  | 5 Pages

    1 Background and problem statement Pomegranate fruit (Punica granatum) has always been known as the symbol of health, fertility and eternal life back in ancient time. Pomegranate is in the subclass Rosidae and in order Myrtales, together with a few other fruits which are guava (Psidium sp.) and feijoa (Feijoa sp.) or known as Pineapple guava. (Stover & Mercure, 2007). The name Punica is from the Roman name of Carthage, Pheonicia (Holland, Hatib, & Ya'akov, 2009) which is the ancient city of

  • Biuret And Lowry Method Essay

    818 Words  | 4 Pages

    OBJECTIVE The objective of this experiment was to analyze and determine the unknown concentration of a protein solution by utilizing two different colorimetric techniques; Biuret and Lowry. The Biuret method was used with unknown #2 and the Lowery method was used for unknown #1. After the concentration of each unknown was analyzed (by Biuret or Lowry method), the alternate objective was to compare the results achieved by each method and to determine if the results from the approaches were consistent

  • Ndnpg Extraction Lab

    946 Words  | 4 Pages

    The equipment used for preparation the extraction unit are shown in Figure 1. The pH of aqueous solution containing 10 μg L−1 of Cd (II) and 50 μg L−1 of Pb (II) was adjusted with HNO3 and NaOH (0.1 M). Then 2 mL of this solution was poured into the syringe. Afterward, 2 mg of NDNPG was added to the extraction unit and immersed in an ultrasonic bath for 60 s to disperse the NDNPG in the sample solution and increase the contact surface between the adsorbent and solution. After sonication, NDNPG was