Αποτελέσματα Αναζήτησης
29 Ιουλ 2022 · Example \(\PageIndex{2}\): Formation of Ions. Magnesium and nitrogen react to form an ionic compound. Predict which forms an anion, which forms a cation, and the charges of each ion. Write the symbol for each ion and name them. Solution. Magnesium’s position in the periodic table (group 2) tells us that it is a metal. Metals form positive ...
Define ionic and molecular (covalent) compounds. Predict the type of compound formed from elements based on their location within the periodic table. Determine formulas for simple ionic compounds. In ordinary chemical reactions, the nucleus of each atom (and thus the identity of the element) remains unchanged.
Lecture 1. Lecturer Anas Tarik Nafei. Objectives: Upon completing this chapter you will be able to: Determine M.wt. of electrolyte from atomic or formula weight as well as valence and no. of ions upon dissociation. Calculate problems involving milliequivalents (used for electrolyte replacement)
13 Νοε 2022 · Explain the distinction between ionic diffusion and ionic migration. Define the limiting ionic conductivity, and comment on some of its uses. Explain why hydrogen- and hydroxide ions exhibit exceptionally large ionic mobilities. Electrolytic solutions are those that are capable of conducting an electric current.
12 Σεπ 2022 · Substances that dissolve in water to yield ions are called electrolytes. Electrolytes may be covalent compounds that chemically react with water to produce ions (for example, acids and bases), or they may be ionic compounds that dissociate to yield their constituent cations and anions, when dissolved.
Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. The properties of ionic compounds shed some light on the nature of ionic bonds.
By the end of this section, you will be able to: Define and give examples of electrolytes. Distinguish between the physical and chemical changes that accompany dissolution of ionic and covalent electrolytes. Relate electrolyte strength to solute-solvent attractive forces.
