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Group 2 are vascular transporters and are 'low affinity sulfate transporters'. Group 3 is the so-called 'leaf group', however, still little is known about the characteristics of this group. Group 4 transporters are involved in the efflux of sulfate from the vacuoles , whereas the function of Group 5 sulfate transporters is not known yet, and ...
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
The solubility of the passivation layer oxides in the molten vanadates depends on the composition of the oxide layer. Iron(III) oxide is readily soluble in vanadates between Na 2 O.6 V 2 O 5 and 6 Na 2 O.V 2 O 5, at temperatures below 705 °C in amounts up to equal to the mass of the vanadate. This composition range is common for ashes, which ...
The solubility of a specific solute in a specific solvent is generally expressed as the concentration of a saturated solution of the two. [1] Any of the several ways of expressing concentration of solutions can be used, such as the mass, volume, or amount in moles of the solute for a specific mass, volume, or mole amount of the solvent or of the solution.
In most cases solubility decreases with decreasing temperature; in such cases the excess of solute will rapidly separate from the solution as crystals or an amorphous powder. [2] [3] [4] In a few cases the opposite effect occurs. The example of sodium sulfate in water is well-known and this was why it was used in early studies of solubility.
Green vitriol is iron(II) sulfate heptahydrate, FeSO 4 ·7H 2 O; blue vitriol is copper(II) sulfate pentahydrate, CuSO 4 ·5H 2 O and white vitriol is zinc sulfate heptahydrate, ZnSO 4 ·7H 2 O. Alum, a double sulfate of potassium and aluminium with the formula K 2 Al 2 (SO 4) 4 ·24H 2 O, figured in the development of the chemical industry.
The tables below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure.
The solubility measured for such a mixture is known as "kinetic solubility". The cloudiness is due to the fact that the precipitate particles are very small resulting in Tyndall scattering . In fact the particles are so small that the particle size effect comes into play and kinetic solubility is often greater than equilibrium solubility.