PH Essays

  • Ionisation Of Amino Acid And Ph Lab Report

    254 Words  | 2 Pages

    Explain the relationship between the ionisation of amino acids and pH |Structural diagram of the neutral structure| |Structural diagram of positively charged structure| |Structural diagram of negatively charged structure| Explain how the form of an amino acid, whether positively charged, negatively charged or neutral, depends of the pH of the solution ? If you increase the pH of a solution of an amino acid by adding hydroxide ions, if this is done then the hydrogen ions will then

  • Bromothymol Blue Ph Enumeration Lab Report

    565 Words  | 3 Pages

    mostly used to show the pH of fish tanks and pools, measuring from 6.0 (yellow color) to 7.6 (green to blue). In the first experiment we exhaled into the solution. As the carbon dioxide from our breath absorbed into

  • Buffers Lab

    816 Words  | 4 Pages

    capacity at pH 4. To do this, buffer #1 consisted of the mixture of 0.5003 M acetic acid and .50 M sodium acetate, while buffer #2 consisted of the mixture .5003 M acetic acid and .4289 M NaOH. Within each mixture, there is a ratio of conjugate acid to conjugate base. By using the Henderson Hasselbalch equation, the volume for the base and acid to buffer the pH of solution at 4.0 were calculated. Two titration were performed for each buffer: HCl and NaOH. A pH meter was used to record the pH change

  • Enzyme Rate Of Reaction Lab Report

    1379 Words  | 6 Pages

    Experimenting the Effects of pH Levels on a Liver’s Enzyme Rate of Reaction What is the effect of pH levels with variations of 1.0, 2.0, 5.0, 7.0, 9.0 (±0.5) on the effect of rate reaction measured by volumetric amount in mL (±2.5) when time (180 seconds), temperature (23ºC) and substrate concentration (1g of 100%liver (±0.01)) are kept constant? This experiment was successfully conducted by placing the pieces on liver inside several flasks holding different pH levels and measuring the amount

  • Buffer Lab Report

    1344 Words  | 6 Pages

    Introduction Buffer is a solution that resists a change in pH when bases or acid are added. Solutions that are acidic contain high concentrations of hydrogen ions (H+) and have pH values less than seven. Buffer usually consist of a weak acid, and its conjugate base or a weak base and its conjugate acid. The function of buffer is to resist the changes in hydrogen ion concentration as a result of internal and environmental factor. This buffer experiment is important so that we relies the important

  • Ocean Acidification Essay

    861 Words  | 4 Pages

    The topic of this research paper will cover over Ocean Acidification and the effects on marine ecosystems. Ocean acidification is the decrease in pH levels of the Earth 's oceans, due to overbearing carbon dioxide being brought by the atmosphere. The carbon dioxide is drawn by seawater, where the chemical reactions take place, which minimize the pH levels in the ocean, the carbonate levels and the important calcium carbonate which these sea creatures need. When carbon dioxide disperses in this ocean

  • Ocean Acidification Lab Report

    898 Words  | 4 Pages

    Ocean Acidification Lab Dyana Padron Chemistry Ms Johnson June 1st 2015 Introduction: Ocean acidification is when the ocean 's pH is downsized. Ever since the industrial revolution, CO2 (carbon dioxide) has increased in the earth 's atmosphere, and much has been absorbed by the oceans, which has made a very large increase in the ocean 's acidity, when carbon dioxide is absorbed into the water, it dissolves forming carbonic acid, which is a factor that take a large part in the acidity raising,

  • Trihalomethane Research Paper

    2953 Words  | 12 Pages

    Chemistry Extended Essay “How does pH affect the concentration of trihalomethanes formed in a sample of reservoir water when it is disinfected with chlorine or chloramine and to what extent do both chloramine and free chlorine decompose when exposed to ultraviolet light?” Abstract This investigation aims to find out how pH affects the concentration of trihalomethanes formed in a sample of reservoir water when it is disinfected with chlorine or chloramine and the extent to which both

  • Orange Juice Preservation

    1075 Words  | 5 Pages

    preserved orange juice are presented in Table 1. The pH of the examined orange juices ranged from 3.30 to 3.66. The pH decreased with increasing week of storage indicating acidity in orange juices. The use of sodium benzoate, sodium metabisulphite and potassium sorbate as preservatives significantly influence the pH of orange juice. The pH of samples was stable throughout the first and second week of storage. However, on the third week of storage, the pH of orange juice preserved using sodium metabisulphite

  • Catalase Enzyme Lab

    1511 Words  | 7 Pages

    includes the pH it is exposed

  • Lab Report On Enzyme Activity

    1419 Words  | 6 Pages

    Banc Instructor: Elizabeth Kraske Date: 09.26.2016 Predictions 1. Sucrase will have the greatest activity at pH 6 2. Sucrase will have the greatest activity at 50 °C (122 °F) 3. Sucrase activity increases with increasing sucrose concentration Materials and Methods Effect of pH on Enzyme Activity 1. Dependent Variable amount of product (glucose and fructose) produced 2. Independent Variable pH 3. Controlled Variables temperature, amount of substrate (sucrose) present, sucrase + sucrose incubation time

  • Laboratory Report on Enzyme Activity

    1407 Words  | 6 Pages

    Banc Instructor: Elizabeth Kraske Date: 09.22.2016 Predictions 1. Sucrase will have the greatest activity at pH 6 2. Sucrase will have the greatest activity at 50 °C (122 °F) 3. Sucrase activity increases with increasing sucrose concentration Materials and Methods Effect of pH on Enzyme Activity 1. Dependent Variable amount of product (glucose and fructose) produced 2. Independent Variable pH 3. Controlled Variables temperature, amount of substrate (sucrose) present, sucrase + sucrose incubation time

  • Multistix Test Lab Report

    1400 Words  | 6 Pages

    treatment group showed no change in glucose (remained negative), little to no change in the protein, pH was around 6.5 after the ninety minutes and experience little change, while the specific gravity for each subject varied, some decreased, and others increased; the average was 1.000. For our glucose treatment group, there was no change in glucose (negative), no change in the protein, the average pH after the ninety minutes was around 6.9- each subject experience an increase or stayed the same, and

  • Pantoprazole Research Paper

    2955 Words  | 12 Pages

    thereby it is very efficient for the treatment of gastric and duodenum ulcers. But pantoprazole sodium is acid labile drug that will degrade in acidic environment of stomach resulting in therapeutic inefficacy. Hence it is necessary to bypass the acidic pH of the stomach which can be achieved by formulating delayed release dosage forms (single unit or multiple units) by using different enteric polymers The present study was an attempt to formulate and evaluate enteric coated tablets for pantoprazole sodium

  • Cause Of Ocean Acidification

    2640 Words  | 11 Pages

    Definition “The acidification of an ocean currently is a greater and a faster then anything geologists can catch in the fossil record of the previous 65 million years” Main causes of acidification Ocean Acidification as its name suggests, the lowering pH of an ocean water. Its is caused by the suspension of an reaction of the carbon dioxide in the water .The process used for making of a soft drinks to produce a bubbly acidic taste. However as one of may unclear a clam living in pool filled with

  • Solubility Lab Report

    1004 Words  | 5 Pages

    Preformulation. In: Lachman L, Liberman H.A, Kanig J.L, editors. The theory and practice of industrial pharmacy. 3rd ed. Bombay: Varghees Publication House, 1990; 171-196. [9]Venkatesh S, Y, Rao V, Anderson B. D, Intrinsic solubility estimation and pH-solubility behavior of cosalane (NSC 658586), an extremely hydrophobic diproticacid, Pharmaceutical Research, 1996; 13(10),

  • Chloramphenicol Ophthalmic Hydrogel Lab Report

    735 Words  | 3 Pages

    Methods Formulation of chloramphenicol ophthalmic hydrogel Formulations was prepared according in Table 1. Poloxamer 188 and poloxamer 407 each weighed and dissolved with distilled water. Then stored in the refrigerator for 24 hours. Next chloramphenicol dissolved with propylenglicol, and nipagin. The mixture was stirred until the entire dissolved and homogeneous. The materials were ready each put in a bottle 100 mL size vial, then sterilized with autoclave for 15 minutes at 121 °C. The preparations

  • Ljc Lab

    1826 Words  | 8 Pages

    Investigable Question My investigable question for the LJOC experiment was how does the pH level of the water in the jars affect the population size of protozoans? pH level, is a scale that measures the concentration of hydrogen ions. On the pH scale, somewhat surprisingly, 7 is neutral—not 0, and anything higher than 7 is basic, and anything lower than 7 is acidic. Background When we (Maleek and I) setup the experiment, which involved 3 jars, we weighed some grass and put some of the grass into

  • Ocean Acidification Assignment

    2070 Words  | 9 Pages

    Faiza Shareef OCEAN ACIDIFICATION The stuffing of carbon dioxide in our earth’s environment is mirrored by an increase in the amount of carbonic acid present in the oceans .The sea water absorbs carbon dioxide, the reaction occur and the pH of the sea water decreases the carbonate ion concentration in the water and the saturation states of the biologically important calcium carbonate minerals also reduces. These reactions are named as ocean acidification .The ocean is found associated

  • Weak Acid Investigation

    781 Words  | 4 Pages

    degree of dissociation, α, can be calculated using the following formula, assuming that α≪1: α=([H^+])/C_a =〖10〗^(-pH)/C_a where [H+] is hydrogen-ion concentration and Ca is concentration of acid (Lower, 2016). Percent ionization is simply the degree of dissociation multiplied by 100% to elicit a percentage of ions dissociated. The degree of dissociation for an acid will increase as the pH decreases and [H+] concentration increases because the original molecule is dissociating into H+ ions and acid