IN his recent statistical calculations on the decomposition of hydrogen peroxide by catalase, Prof. J. B. S. Haldane estimatedthat the mean life of an active catalase-hydrogen peroxide molecule is about 10second, and the velocity constant for the union of catalase and hydrogen peroxide exceeds 7...
IN a recent letter1 Johnson and van Schouwenburg dispute Keilin and Hartree's observation2 that catalase activity depends on the presence of oxygen. In their reply, Keilin and Hartree3 point out that the experiments of Johnson and van Schouwenburg are only qualitative and therefore not ...
2 Determination of the enthalpy change of decomposition of hydrogen peroxide Decomposition of hydrogen peroxide occurs spontaneously but slowly at room temperature.The heat evolved from the decomposition is not significant hence is not measurable. By increasing the rate of decomposition, temperature changes...
10. The decomposition of hydrogen peroxide in aqueous solution is a first order process If 10% of the hydrogen peroxide in a solution of concentration 0.1 mol dm^{3decomposes in 5minutes at a certain temperature, what percentage of the hydrogen peroxide in a solution of concentration 0.2 mol ...
The catalysed decomposition of hydrogen peroxide in the presence of ethylenediaminetetrakis(methylene-phosphonato)iron(III) was studied at various temperatures. The observed rate law is given by -d[H2O2]/dt = k1K/([H+] + K) [Fe(CENTMP)]....
The thermal decomposition of hydrogen peroxide (H2O2) in seven bath gases (M = He, Ar, H2, N2, CO, CH4, and H2O) has been studied by classical trajectory calculations of the collisional energy transfer processes and master equation analyses of the pressure-dependent rate constants. The energy...
18 Manganese(IV) oxide is a catalyst for the decomposition of hydrogen peroxide.Which one of the following statements explains why the rate at which oxygen is produced decreases during the reaction?I Manganese(IV) oxide is used up.The reaction absorbs heat energy from the surroundings. C The ...
Question 2The rate of decomposition of hydrogen peroxide is increased by the presence of a catalyst.The catalystB A. increases the equilibrium constant for the reaction. B. provides a reaction pathway with a lower activation energy. C. provides a reaction pathway with a greater activation energy...
Appleby A. J,Savy M.Kinetic of oxygen reduction reactions involving catalytic decomposition of hydrogen peroxide Application to porous and rotating ring-disk electrodes. Journal of Electrocardiology . 1978Appleby A. J,Savy M.Kinetic of oxygen reduction reactions involving catalytic decomposition of ...
Recently, we proposed the use of cellular ceramic as catalyst support for the decomposition of hydrogen peroxide [5,6]. Compared to extrudates or pellets, honey-comb monoliths show many advantages: (i) lower pressure drop, (ii) better thermal shock and attrition resistance with limited fine form...