Chloride and Salinity
Chloride, in the form of the Cl– ion, is one of the major inorganic anions, or negative ions, in saltwater and freshwater It originates from the dissociation of salts, such as sodium chloride or calcium chloride, in water NaCl(s) Na+(aq) + Cl–(aq) CaCl2(s) Ca2+(aq) + 2 Cl–(aq)
FORMULAS AND NOMENCLATURE OF IONIC AND COVALENT COMPOUNDS
Polyatomic Ions Polyatomic ions are ions that are composed of two or more atoms that are linked by covalent bonds, but that still have a net deficiency or surplus of electrons, resulting in an overall charge on the group A metal plus a polyatomic ion yields an ionic compound Formulas and Names of Some Polyatomic Ions NH 4 + ammonium CO 3 2
Chemistry 12 Unit 3 - Solubility of Ionic Substances Tutorial
2- ions from the CaCO3 So what in the world will happen now? CO 3 2-Ca2+ CaCO3 (s) Ca2+ Cl-Since there were no Cl-ions in the solid or in the solution before, they will not affect anything They can be regarded as spectator ions in this case But you can see by the diagram that we are adding Ca2+ ions to a saturated solution of CaCO3
Common Ions and Their Charges - ScienceGeeknet
Common Ions and Their Charges A mastery of the common ions, their formulas and their charges, is essential to success in AP Chemistry You are expected to know all of these ions on the first day of class, when I will give you a quiz on them You will always be allowed a periodic table, which makes indentifying the ions on the left “automatic ”
Periodic Chart of Ions - ScienceGeeknet
Periodic Chart of Ions IA VIIIA 1 H+ hydrogen IIA IIIA IVA VA VIA VIIA 2 He helium 3 Li+ lithium 4 Be2+ Beryllium 5 B boron 6 C carbon 7 N3-nitride 8 O2-oxide 9 F-fluoride 10 Ne neon 11 Na+ sodium 12 Mg2+ magnesium IIIB IVB VB VIB VIIB VIIIB IB IIB 13 Al3+ aluminum 14 Si silicon 15 P3-phosphide 16 S2-sulfide 17 Cl-chloride 18 Ar argon 22 Ti4
Lecture 4: Major Ions, Conservative Elements and Dissolved
this definition is used is because Salinity is reported to ± 0 001 or 1 ppm Thus, the major ions are those ions that contribute significantly to the salinity According to this definition there are 11 major ions, all other elements in seawater are present in concentrations less than 1ppm (
Ion Exchange for Dummies - Lenntech
Ions in water are loosely connected to water molecules They are said to be hydrated, the cations being attracted by the O atom, anions by the H atoms of the water molecule, as shown in figure 2 Figure 2: Ions in water e g Na+ and Cl– (table salt NaCl) Magnesium sulphate is a salt with exactly the same number of magnesium cations (with
Chapter 3 Calculation with Chemical Formulas and Equations
2 formula units, How many Cl – ions are in 1 mole of CaCl 2? 1 mole of CaCl 2 consists of 1 mole Ca 2+ and 2 mole Cl – If 1 mole of Cl – is 6 02 x 10 23 Cl – ions, then 1 mole of CaCl 2 contains (2 x 6 02 x 10 23) Cl – ions or 1 20 x 10 24 Cl – ions C) Molar Mass What is the mass of 1 mole of a substance? Molar mass mass of 1 mole
CHEMICAL FORMULAS, NOMENCLATURE AND COMPOUND TYPES
Be sure to balance the count of ions shown inside the bracket You should use a periodic table Chemical Compound Ions present Name Type (if ionic) Chemical Formula Ex aluminum sulfide ionic [ 2 Al+, 3 S2-] Al 2S 3 chromium(III) oxide ionic [ Cr3+, O2-] Cr 2O 3 zinc chloride ionic [ Zn2+, Cl-] ZnCl 2
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