The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic. So basically a neutral water should have a pH of 7‚ but usually we see that they might be 6.8 or 7.5. That is still drinking water. Usually water with pH of 7 is much expensive than the average one which is usually from 6.8 to 7.5 . Some common acid and bases with their pH scale : Common Acids | pH | Common Bases | pH |
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acidity which is below 5.5 ph level in our mouth which is produced by those sweet foods. The graph shows us the relationship between the ph level of acidity and the time elapsed after eating sweet foods. At this graph‚ there are 3 tested sweet foods: fruit sugar‚ cane sugar and honey. These sweet foods could cause different acid levels in mouth when they are consumed. In the first 5 minutes when somebody consumes honey‚ the acidity level will increase approximately 2 levels of ph‚ while when the other
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least‚ we have to know about acid-base balance. pH‚ acid and bases‚ and buffer system. Acid is substance that dissociates into hydrogen ions (H+). Base is a substance that dissociates into hydroxyl ions (H-). Buffer is a solutions containing substance that have the ability to minimize change in the pH when an acid or base was added into it. Acid and base balance in human body is essential for all living things. When there are slightly change of pH‚ it will affect the enzymes activity in the body
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imbalence in patients with serious illnesses. pH and hydrogen ion concentration The acidity and alkalinity of a solution depends on its hydrogen ion (H+) Concentration. An increase in H+ concentration leads to acidity ‚a decreased leads to alkalinity . acids are produced by the body daily.H+ concentration of body fluid is small(0.0004meq/l).H+ ion concentration is usually expressed as a negative logarithm(symbolized as pH) rather than in milliequivalents. The use of the
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Biology 181 Ana Marti-Subirana Identification of unknown a-Amylase through testing different temperatures and pH values to detect the absorbance of maltose. Introduction: Enzymes are biological catalysts‚ mainly proteins for this experiment‚ generated by an organism to speed up chemical reactions. They have active sites on which the substrate is attached‚ and then broken up or joined. For this experiment we are going to work with the enzyme a-amylase. Amylase is an enzyme that breaks
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Tutorial 1 1. pK = 3.4 DH = ASA Plasma pH = 7.3 Stomach pH = 1.5 = 10pH – pK = 10pH – pK = 107.3 – 3.4 = 101.5 – 3.4 = 7943.2823 = 0.01259 [Total Drug] = [D-] + [DH] [Total Drug] = [D-] + [DH] = 7943.2823 + 1 = 0.0126 + 1 = 7944.2823 = 1.0126 [Total Drug] in stomach relative to plasma = 7944.2823/1.0126 = 7845.43 Conclusion: High absorption of ASA from the stomach lumen. Absorption from stomach is 7845.43 times
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Lab Report Factors That Affect Enzymes Reaction Rate Name of lab: Effects of temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration on Enzymatic Activity Introduction: Enzymes are the most important types of proteins‚ they act as catalysis (speed up chemical reactions). If enzymes didn’t exist‚ biochemical reactions would act to slowly and they couldn’t keep up with the metabolic functions. Enzymes have a three-dimensional structure that is really complex. This structure consists
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learn about the various processes by which water is processed and treated. This experiment will involve removing chemical impurities in water through using techniques such as absorption spectrophotometry‚ sample collection‚ serial dilution‚ filtration PH and graphical analysis. If this experiment is done properly the water sample collected from the pond should wind up purified and have a purity percentage close to 100%. Procedure: The steps of this experiment can be found in the Lab Manual. Dillon
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4.3 (b) To investigate the effect of pH on the rate of catalase activity Teacher Notes Apparatus required per class group of 24 students Chopping board 12 Knife 12 Weigh boats 12 100 ml Graduated cylinders 36 Boiling tube 36 Syringe 12 Electronic balance 3 Dropper 12 Timer 12 Labels 36 Thermometer 12 Water bath 3 Enzyme source eg. Radishes/celery Hydrogen peroxide Range of buffer solutions pH paper Washing up liquid Disposable gloves The apparatus
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Experiment Acids‚ Bases‚ and Neutrals Problem Are common house-hold products pH balanced and neutral? Information Gathered pH measures how acidic or alkaline a solution is. The pH scale ranges from 0-14. Solutions that range from 0-6 are considered to be acidic. Solutions that are on the acidic end of the scale are low in pH‚ high in hydrogen ion‚ and low in hydroxyl ions. An acid has a sour taste‚ hence‚ will react to metal and will be corrosive; therefore‚ they are considered as an electrolyte
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