Water Electrolysis

Water molecules can be broken down into elements of their home with an electric current mengalirinya. This process is called electrolysis of water. At the cathode, two water molecules react with the capture of two electrons, is reduced to H2 gas and hidrokida ions (OH-). Meanwhile at the anode, two other water molecules are broken down into oxygen gas (O2), releasing H + 4 ions and electrons flow to the cathode. Ions H + and OH-experiencing re-neutralization to form a water molecule. The overall reaction of the electrolysis of water equivalent can be written as follows.

\ mbox () 2H_ (2) O (l) \ Rightarrow 2H_ (2) (g) + o_ (2) (g) \,

Hydrogen and oxygen gas produced from this reaction to form bubbles on the electrodes and can be collected. This principle is then used to produce hydrogen and hydrogen peroxide (H2O2) which can be used as fuel for hydrogen vehicles. [8] [9] [10]

[edit] Solubility (solvasi)

Water is a powerful solvent, dissolving many types of chemicals. Substances are mixed and dissolved well in water (eg salts) is called the substances "hydrophilic" (water-loving), and substances that are not easily mixed with water (eg fats and oils), referred to as substance -substance "hydrophobic" (fear-water). The solubility of a substance in water is determined by whether the substance can match the force of electric attraction (intermolekul force dipole-dipole) between the water molecules. If a substance is not able to counter the force of attraction between water molecules, the molecules are not soluble substance and will sink in water.