EXPERIMENT NO. 5 COMMON ION EFFECT Lopez‚ Pauline G. HIJ-2‚ Group No. 5‚ Ms. Jervee M. Punzalan Ramales‚ Ayane Mark Q. September 15‚ 2014 I. ABSTRACT The common ion effect involves how the solubility of a salt changes when some ion that is common to both added substance and the salt in question is introduced. The presence of a common ion hinders the ionization of a weak acid or a weak base hence this is known as the common ion effect. Simply put‚ the effect
Free PH Buffer solution Acid dissociation constant
Pseudomonas taiwanensis – Enrichment‚ Isolation and Identification Microbiology 521 2/10/12 Purpose: The purpose of this experiment was to enrich Pseudomonas bacteria‚ isolating a species of Pseudomonas and identifying it using phenotypic properties and DNA sequencing as an existent or completely new and undiscovered species of Pseudomonas. Overview: Genus Pseudomonas is a chemoheterotrophic bacteria found in soil and water. They are Gram negative‚ motile‚ paired rods that are also oxidase-positive
Premium Bacteria Microbiology Escherichia coli
= 0.01 %D- = x100% %D- = x100% %DH+ = x100% %DH+ = x100% = 0.01% = 99.01% = 100.00% = 99.01% 3. DH = sulfonylureas At pH = 5 At pH =6.5 Metsulfuron-methyl (pK = 3.3) Metsulfuron-methyl (pK = 3.3) = 105 – 3.3 = 106.5 – 3.3 = 50.1187 = 1584.8932 %DH = x 100% %DH = x 100% = 1.96% = 0.063% Chlorsulfuron (pK = 3.7) Chlorsulfuron (pK = 3.7) = 105 – 3.7 = 106.5 – 3.7 = 19.9526
Premium Gastric acid PH Calcium
Separation of a Carboxylic Acid from a Neutral Compound by Extraction Reference: Smith‚ Chapter 2 (Acids and Bases) Introduction Carboxylic acids and phenols are two families of organic compounds that contain carbon‚ hydrogen and oxygen‚ and also react with water to yield an excess of hydronium ions over hydroxide ions. Pure water has a pH of 7‚ which means it has a hydronium ion concentration‚ [H3O+] of 10-7 M (M = molarity‚ moles/Liter). The hydronium ions in pure water come from the self-ionization
Premium Acid Acetic acid PH
suitability of phenolphthalein and methyl red as acid base indicators. We found that the equivalence point of the titration of hydrochloric acid with sodium hydroxide was not within the ph range of phenolphthalein’s color range. The titration of acetic acid with sodium hydroxide resulted in an equivalence point out of the range of methyl red. And the titration of ammonia with hydrochloric acid had an equivalence point that was also out of the range of phenolphthalein.. The methyl red indicator and the phenolphthalein
Premium PH indicator Titration PH
The methyl red test will indicate if the organism produces acidic or neutral end products by the fermentation of carbohydrates. After inoculation‚ methyl red is directly added to the broth‚ a positive result is a red coloring of the broth while a negative result shows no color change. After inoculation‚ I added methyl red to the tube to identify what type of end-products were produced. This addition of methyl red didn’t change the color of the broth which
Premium Bacteria Microbiology Gram staining
This solution is also known as an insecticide‚ which in simpler terms is a chemical (Emamectin Benzoate). This would be injected into the base of any ash tree and is used to kill off the EBA or any other unwanted pests. Now many wonder if it will hurt the tree‚ and the answer is no. This chemical is not only killing the EBA‚ but also helping the ash
Premium Tobacco Nicotine Smoking
the volume needed to neutralize the soda ash is used to compute for its alkalinity‚ in this experiment we obtained a 17.6 % alkalinity with an error of 15.14% In the analysis of a carbonate-bicarbonate mixture two indicators (phenolphthalein and methyl orange) were used. The first endpoint determines the half-neutralization of the carbonate and the second determines that of the bicarbonate. The experiment results to an analysis of 4.92% carbonate and 5.07% bicarbonate content in the unknown sample
Premium PH Sodium hydroxide PH indicator
Developing Fuels Revision questions and suggested answers 1. Define ΔHfθ and ΔHcθ ΔHfθ the enthalpy change when 1 mole of a compound is formed from its constituent elements in their standard states measured under standard conditions ΔHcθ the enthalpy change when 1 mole of a compound undergoes complete combustion measured under standard conditions 2. Write an equation for the enthalpy of formation of butane C4H10 4C(s) + 5H2(g) C4H10(g) 3. Write an equation for the
Premium Carbon dioxide Oxygen Ethanol
remains clear even if it is very thick‚ it is also ideal for making an aquarium. Plexiglass is also used for making display cases. These useful properties of plexiglass are due to its chemical structure. The chemical name for plexiglass is poly (methyl methacrylate). It belongs in a family of polymers called the acrylates‚ or commonly known as the acrylics. The acrylics come under many common names.
Premium Polymer Glass Temperature