Weak acids are weak electrolytes, and most other molecular compounds are non-electrolytes. Many textbooks incorrectly state that all salts or ionic compounds are strong electrolytes.
However, many ionic compounds or salts of transition metals or alkaline earth metals are not strong electrolytes. When they dissolve, some of the ions separate, but some stay together. Here are some examples:. As you can see, these salts are electrolytes they do produce ions but if you do calculations assuming that they separate completely into sulfate, potassium, cadmium II and iodide ions, you might get very wrong answers!
For example, some species are only slightly soluble in water, yet are strong electrolytes. This means that not very much dissolves, but all that does dissolve breaks into ions. An example is the strong base strontium hydroxide, Sr OH 2.
Examples : Strong acids, strong bases , and salts are strong electrolytes. Weak electrolytes partially ionize in water. Examples : Weak acids and weak bases are weak electrolytes. Dissolution of an ionic compound is facilitated by ion-dipole attractions between the ions of the compound and the polar water molecules.
Soluble ionic substances and strong acids ionize completely and are strong electrolytes, while weak acids and bases ionize to only a small extent and are weak electrolytes. Nonelectrolytes are substances that do not produce ions when dissolved in water.
Crystals of NaCl dissolve in water, a polar liquid with a very large dipole moment, and the individual ions become strongly solvated. Hexane is a nonpolar liquid with a dipole moment of zero and, therefore, does not significantly interact with the ions of the NaCl crystals. Therefore, z best represents the solution. Skip to content Chapter Solutions and Colloids. Learning Objectives By the end of this module, you will be able to:. Explain why solutions of HBr in benzene a nonpolar solvent are nonconductive, while solutions in water a polar solvent are conductive.
Consider the solutions presented: a Which of the following sketches best represents the ions in a solution of Fe NO 3 3 aq? Write equations and prepare sketches showing the form in which each of these compounds is present in its respective solution.
Strong Electrolyte Definition and Examples. List of the Strong Acids and Key Facts. Weak Electrolyte Definition and Examples. Freezing Point Depression Example Problem. Chemistry Examples: Strong and Weak Electrolytes. Neutralization Definition in Chemistry. Arrhenius Acid Definition and Examples. How to Calculate the pH of a Weak Acid. Your Privacy Rights.
To change or withdraw your consent choices for ThoughtCo. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page.
0コメント