Oxygen liberation

The decomposition of the nitrates produces oxygen molecules, and we have verified that if a mixture of silver nitrates and closed tubes is submitted to a thermal treatment (400°C) decomposing the salt, it is possible to observe filled CNTs (Ag, Co, Cu [34]). It appears that oxygen liberated during the thermal decomposition of the metal salt erodes the CNT tip and the yet un-decomposed salt then enters by capillarity (see Fig. 8). We have also observed during the electron-irradiation decomposition of enclosed nitrate that the liberated gases erodes the CNT cavity [22] (see the innermost tubes in Fig. 5). 

Oxidation of ferrocyanide, although used occasionally, offers no advantages relative to reduction of ferricyanide. Because the potential for oxygen liberation in alkaline solutions is close to the oxidation potential of the ferrocyanide couple, the limiting-current plateaus obtained in this case are quite narrow (El). 

EXAMPLE 11.19. What volume would be occupied by the oxygen liberated by heating 0.200g of KCIO, until it completely decomposes to KCl and oxygen The gas is collected at STP. 

The oxygen liberated during photosynthesis comes from water rather than C02. 

Dufraisse has shown that the oxygen liberation from acene endo-peroxides is quite often accompanied by chemiluminescence, the spectrum of which is usually similar to the fluorescence of the corresponding hydrocarbon,271-273 although this point seems to require confirmation.274 According to Bowen,275 the most likely processes involved are... 

The oxygen liberated in Reaction 4 of this problem may be derived from the superconductor, not from solvent water. In any case, BiO reacts with Fe2+, and Cu3+ does not, when the sample is dissolved in acid. 

It will be observed that the last oxidation is effected by electrolytic oxygen liberated at the anode, no manganese dioxide is formed, and the potash which is produced may be used again in the fusion process for preparing more manganate. 

Oxygen liberation is thought to be initiated by the presence of a large quantity of sulphate ions in the solution. In order to prevent an unduly high concentration of sulphate ions during electrolysis a low concentration level is maintained by their continuous precipitation by means of barium chloride. 

Clark electrode — Electrochemical device measuring the concentration of oxygen liberated in an enzymatic... 

---