In Equation 1, for example, increasing the amount of hydrogen peroxide will increase the rate at which it reacts with iodide. The concentrations of iodide and acid remain the same, so the rate will depend only on the changes in hydrogen peroxide concentration. (The iodide is recycled between Equations 1 and 2, and the concentration of acid is high enough that the change in its concentration is small. Note the concentrations of the reactants in the Materials and Equipment section). The rate actually depends on the concentration of hydrogen peroxide raised to a power, called the "reaction order."
Fig. 6 (a) shows the effect of hydrogen peroxide increase on the MB removal at constant pH 3 and Fe3+ of 40 mg/L. The results show that the degradation rate of MB increases with an increase in initial H2O2 concentration from 100 to 400 mg/L, but in excess of about 400 mg/L; the H2O2 dose of 1000 mg/L, plot of
The dependent variable is the rate of decomposition of water which is measured by the volume of hydrogen gas and oxygen gas in cm3 The independent variable is the voltage here as I increase it from 9-14 Room temperature was 24 rtp and I carried out the whole experiment in the same room. If the temperature increases the rate of electrolysis will increase. The concentration of the sulphuric acid which is 0.02 M. If I increase the concentration of sulfuric it would’ve been the decomposition of sulfuric acid not water because we just need some ions in the pure water so the ions can move to the electrodes. An increase in concentration will increase the rate of decomposition. The socket that was the power supply was plugged in was 220-240 volts and same socket was used throughout the whole experiment Time is one of the major factors the time that was used is 35 minutes and if I increase the time the rate of decomposition is going to increase which means a greater volume of oxygen and hydrogen.
The experiment was done at room temperature the hot air velocity was considered to behave as an ideal gas. The drying air temperature ranged between 39.9 and 79.9oC, and the hot air velocity between 1.1 and 3.6 m/s. The raising of the air temperature and air velocity resulted in the drying rate increasing and, which means the drying time is reduced to gain the desired ﬁnal moisture content. The effect of the power of ultrasound on the rate of drying was observed at drying temperatures of between 40 and 60oC, and an air velocity of between 1 and 2 m/s. As can be expected the drying rate increases with the ultrasound power at a higher level.
For both T1 and T2, the total area under the curve is the same and the fraction of molecules with energy greater than the activation energy (Ea) is significantly larger in T2 than in T1. According to the Maxwell-Distribution Curve, when the temperature increases, more of the hydrogen peroxide particles, in this case, have sufficient energy to react thus more products are formed at a given unit of
Water potential is often represented by the Greek letter, psi ψ .The higher the rate of collisions of the water molecules with the membrane, the greater the pressure on it. This pressure is called water potential. Water always moves from higher water potential to lower water potential. The standard unit for water potential is kilopascals (kPa), which is also the unit pressure. Pure water is designated a water potential of zero which has the highest water potential under atmospheric pressure at 25°C.
Solar distillation provides partially support humanity’s needs for fresh water with free energy, simple technology and clean environment. Solar still have a good chance of success in India for lower capacities which are more than 20 km away from the source of fresh water and where the TDSof saline water is over 10,000 ppm or where seawater is to be desalted. India, being a tropical country is blessed with plenty of sunshine. The average daily solar radiation varies between 4-7 KWh per square meter for different parts of the country. There are on an average 250-300 clear sunny days a year.
This can be explained through the result of the experiment. When the temperature is setted to 100 ºC, the K value of the specimen is 3.925kcal/(mh⁰C) .However, the K value of the specimen turn to a higher value at 9.174 kcal/(mh⁰C) once the set temperature is 200 ºC. Obviously, the K value is directly proportional to the temperature . Meanwhile, the different thickness of the SUS 304 also show an effect on the K value. The K value increases when the thickness of specimen decreases.
Six elements and compounds make out 99% of sea salts which are chlorine (Cl-), sodium (Na+), sulfur (SO4-2), magnesium (Mg+2), calcium (Ca+2), and potassium (K+). The relative abundance of this salts in seawater are constant regardless of the ocean. Seawater also contains small amounts of dissolved gases. These gases are added to seawater from the atmosphere through the stirring of the sea surface by wind and waves. The concentration of gases that can be dissolved into seawater from the atmosphere is determined by temperature and salinity of the water.