Arrhenius equation

rheometer. The rheological parameter shear stress was measured upto the shear rate of 600s-1. The temperature dependency of Newtonian viscosity of beetroot juice was described by Arrhenius equation. The effect of added solid content on viscosity of enzyme clarified beetroot juice was studied followed by exponential type equation at the temperature. A combined single relation Newtonian viscosity to temperature and added solid content of different carrier material in enzyme…

Bronsted-Lowry definition states that acids are proton (hydrogen ion that loses its electron) donors and bases are proton acceptors. For example, hydrochloric acid would donate its hydrogen atom to water to become hydronium, HCl + H2O → H3O+ + Cl-. The Arrhenius definition claims that acids produce positive hydrogen…

divided by the volume of sample for 1 atm of gas on the sample surface. (2.26) When, , , then the above equation can be rewritten as and when p1 = 1 atm (2.27) Where, c1 is the concentration in the sample when the equilibrium is reached. The solubility S is expressed in cm3 of gas at STP per cm3 of the solid at a pressure of 1 atm. (cm3 STP/cm3 atm). Equation (permeability) obeys Henry’s law when S is independent of p (Mangaraj et al., 2009). Effect of temperature on…

3. Results and Discussion 3.1. Temperature dependence of D.C. Electrical Resistivity The temperature dependence of the D.C. electrical resistivity of all the samples of Co-Cr ferrite system was studied using two probe method in the temperature range of 200-7000C. The resistivity of the prepared samples was calculated using the relation 1. From fig. 1 and 4, it is clear that the resistivity decreases with increasing temperature ensuring the semiconducting nature of the prepared spinel ferrites…

INTRODUCTION Chemically and thermodynamically foam is an unstable, dispersed system of entrapment of gaseous molecules in solid or liquid matter. Instability of foam is caused generally due to coalescence, liquid drainage and disproportion of bubbles. Foam being aqueous system can be produced using surfactants available commercially. The types of surfactants used in preparation of aqueous foam influence the foam properties (Eisner et al., 2007; Bhakta and Ruckenstein, 1995). Successful foam…

Kinetic investigation and the Arrhenius plot The degradation of SAC in acidic, basic and oxidative mediums at different HCl (0.01, 0.05 and 0.1 M, keeping temperature 90 ºC), NaOH (0.005, 0.01 and 0.05 M, keeping temperature 40 ºC) and H2O2 (5%, 10% and 15%, keeping temperature 90 ºC) strengths was studied. Also SAC degradation was studied as a function of temperature in acidic (30, 60, 70, 90ºC and room temperature, keeping HCl strength 0.1M), basic (40, 65, 90ºC and room temperature, keeping…

1.5. Enzyme-Polysaccharide Interactions Proteins and enzymes have become an integral part of many industrial processes as well as being applied both in cosmetics and in therapeutics. Due to advances in biotechnology and genetic engineering, mass production of protein and enzymes has become feasible. Use of enzymes is environmentally friendly as they catalyse reactions under mild conditions against polluting inorganic catalysts which works in the extremes of pH and temperature. However, this can…

CORROSION STUDIES WITH ANTIGONON LEPTOPUS IN 1M HCl S.Aejitha 1, P P.K.Kasthuri 2andGeethamani 3 1 Department of Chemistry, Asian College of Engineering & Technology, Coimbatore- 641110, India 2 Department of Chemistry, L.R.G.Government Arts College for Women, Tirupur- 638604, India 3 Department of Chemistry, Sriguru Engineering College of Technology, Tamil Nadu, Coimbatore -641110, India Correspondence should be addressed to S.Aejitha ,aejitha_subbaian@yahoo.co.in ABSTRACT The inhibition…

1. Introduction Hydroxynitrile lyases (HNL, EC 4.1.2.x) are enzymes which mediate the release of hydrogen cyanide (HCN) and aldehyde or ketone from cyanohydrins [1]. These HNL catalyse enantioselective synthesis and cleavage of cyanohydrins [2]. The cyanohydrins and their derivatives are finding wide applications in industries like pharmaceuticals, agrochemicals and cosmetics since these can be readily converted into other important molecules like α-hydroxy carboxylic acids, α-hydroxy ketones…