Na2CO3 and NaHCO3 present in the sample was determined at the end of the experiment. Introduction Soda Ash (Na2CO3) or sodium carbonate is commonly used as a cleaning agent and known as “washing soda”. It was found to be alkali and has a high pH in concentrated solutions. It is soluble in water but its solubility decreases slightly as the temperature increases above 35.4○C or 95.7○F. It is used in many different fields such as manufacturing‚ at home or in industries. It can be produced either
Premium Acid Carbon dioxide Chemistry
enzyme concentration‚ temperature and pH on hydrolysis and solubilization of corn gluten as well as enzyme stability. The corn gluten was hydrolyzed by Alcalase enzyme (a bacterial protease produced by a selected strain of Bacillus licheniformis) that was chosen among five commercial enzymes examined. The optimum process conditions for hydrolysis and solubilization were obtained as 30 g L–1 substrate mass concentration‚ 2.5 mL L–1 enzyme concentration‚ 55 °C and pH 8. Under these conditions‚ the values
Premium Enzyme PH
Cell Structure and Function: Tonicity and pH Justin HeshizerBIOL 1107K (80561) 50 Experiment Number 5 10/02/14 Margaret E. Vorndam‚ M.S. Version 42-0038-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a
Premium Buffer solution Cell wall PH
your report) Activity: Enzyme Activity Predictions 1. Sucrase will have the greatest activity at pH 6 2. Sucrase will have the greatest activity at 60 °C (140 °F) 3. Sucrase activity decreases 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
Premium Enzyme PH Blood
single sensor channel‚ and were difficult to assemble due to the use of discrete components. The measurement parameters consisted of temperature‚ pH or pressure‚ and the first attempts of conducting real-time noninvasive physiological measurements suffered from poor reliability‚ low sensitivity‚ and short lifetimes of the devices. The first successful pH gut profiles were achieved in 1972‚ with subsequent improvements in sensitivity and lifetime. Single-channel radio telemetry capsules have since
Premium PH
Determining the equilibrium constant from pH values of changing concentrations of ethanoic acid Design Research question: How will altering the concentrations of ethanoic acid affect the pH value‚ and‚ in-turn‚ the equilibrium constant? Background information: When weak acids react‚ the reaction typically does not go to completion. Rather‚ the system goes to an intermediate state in which the rates of the forward and reverse reactions are equal. Such a system is said to be in chemical equilibrium
Free PH Acid dissociation constant Chemical equilibrium
measure pH‚ which is safe for the environment and biodegradable to promote conservation of resources. One head of red cabbage can produce over two litres of indicator‚ and its growth period is approximately six to seven months‚ which is ideal for factorial production conditions. In the future‚ commercialized indicators may incorporate more naturally-occurring substances such as red cabbage or like plants such as petunias or onions. Biochemistry would merge with pH for a future in laboratorial pH indicator
Premium PH Chemistry Acid
Biology 20 IB Design Lab Does increasing or decreasing the ph level of a 3% concentration H2O2 (l) solution affect the amount of oxygen released between 15.0ml of the solution and a 5g sample of liver? The reaction is measured by the difference in mass of a balloon that is used to capture the amount of gas released by the catalase enzyme found in liver reacting with a basified 3% H2O2 (l) and an acidified 3% H2O2 (l) . Chemical reactions occur when two or more molecules interact and the molecules
Premium Acid Oxygen Chemistry
Definition of Enzyme Unit and Specific Activity- 6 3.5 Determination of pH Optimum 6 3.6 Determination of Michaelis-Menten Constant 7 3.7 Ammonium Sulphate Fractionation 7 3.8 Gel Filtration on Sephadex 7 3.9 Chromatography on DEAE-cellulose 7 4 Results 8 4.1 Freshly Prepared Crude 8 4.2 Crude Thawed after a Week of Freezing 9 4.3 Sephadex 25 Gel Filtration 11 4.4 Determination of Optimum pH 12 4.5 Ion Exchange Chromatography 13 4.6 Michaelis-Menten Kinetics 13
Premium Enzyme PH
CROATICA CHEMICA ACTA CCACAA 78 (1) 99¿103 (2005) ISSN-0011-1643 CCA-2984 Original Scientific Paper Acid Value Determination in Vegetable Oils by Indirect Titration in Aqueous-alcohol Media Elena Kardash* and Yakov I. Tur’yan National Physical Laboratory of Israel (INPL)‚ Givat Ram‚ Jerusalem 91904‚ Israel RECEIVED JANUARY 16‚ 2004; REVISED JULY 21‚ 2004; ACCEPTED OCTOBER 28‚ 2004 Keywords acid value vegetable oils indirect titration A new method of acid value determination in
Premium PH Titration Acid dissociation constant