When metal oxides are put into contact with water, they often, though not always, form metal hydroxides. The reaction depends on the element, the acidity of the metal oxide and on the physical state of the water.
It is generally the case that only weakly acidic or non-acidic metal oxides form metal hydroxides when in contact with water. The oxides that react in this way with water are called basic oxides. In addition, most metal hydroxides are formed only with cold water. Metal hydroxides break down into their constituent parts when exposed to high heat. Basic oxides generally do not form hydroxides when exposed to steam.Learn More
Solubility of gases in water is affected by pressure and temperature. Increasing the pressure increases the solubility of the gas in water. Decreasing the temperature also increases gas solubility in water.Full Answer >
Pb(NO3)2 is soluble in water. Pb(NO3)2 is the formula of lead(II) nitrate, an inorganic compound whose water solubility is 52 grams per 100 milliliters at 20 degrees Celsius and 127 grams per 100 milliliters at 100 degrees Celsius.Full Answer >
Water is a polar solvent, meaning it has partial opposite charges at each end of each molecule, and so ionic substances, in which each particle is charged, and other polar substances dissolve best in water. However, to dissolve a substance, the attraction of the solvent for particles of the solute must be greater than the forces holding the solute together, so many ionic substances are not soluble in water.Full Answer >
According to Aqueous Solutions Aps, K2SO4 is soluble in water at different temperatures. Potassium sulfate (K2SO4) is, however, salted out when mixed with water and other solvents, which means an excess of salt precipitates and solubility decreases.Full Answer >