Αποτελέσματα Αναζήτησης
Potassium Iodide | KI or IK | CID 4875 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Potassium iodide (KI) is prepared by reacting potassium hydroxide to iodine with a hot solution. It is used mainly in the form of a saturated solution, 100 g potassium iodide to 100 ml water. That equates to around 50 mg/drop.
What is a boiling point? The boiling point of a substance is the temperature at which the vapor pressure of the liquid is equal to the surrounding atmospheric pressure, thus facilitating transition of the material between gaseous and liquid phases.
1 Οκτ 2010 · Bottom Line. Notes. 1. Ionic forces are interactions between charged atoms or molecules (“ions”). Positively charged ions, such as Na (+) , Li (+), and Ca (2+), are termed cations. Negatively charged ions, such as Cl (–), Br (–), HO (–) are called anions (I always got this straight through remembering that the “N” in “Anion” stood for “Negative”).
Boiling temperatures for common liquids and gases - acetone, butane, propane and more. The boiling point of a substance is the temperature at which it changes state from liquid to gas throughout the bulk of the liquid. At the boiling point molecules anywhere in the liquid may be vaporized.
Intermolecular forces (IMFs) can be used to predict relative boiling points. The stronger the IMFs, the lower the vapor pressure of the substance and the higher the boiling point. Therefore, we can compare the relative strengths of the IMFs of the compounds to predict their relative boiling points.
Compare the change in the boiling points of Ne, Ar, Kr, and Xe with the change of the boiling points of HF, HCl, HBr, and HI, and explain the difference between the changes with increasing atomic or molecular mass.
