Somesh Mishra Grade Is it clear?? Cool Dude Grade Similar Questions 10a Solid NaCl does not conduct electricity but when dissolved in water, it conducts electricity. Tap water conducts electricity because it has dissolved If a problem demands use of oxidation potential, it may be interpreted as the negative of the recorded reduction potential. The production of this low-energy and stable electron configuration is clearly a favorable process. Recall that a more positive potential always means that that reaction will be favored; this will have consequences concerning redox reactions.
Privacy Policy. Skip to main content. Aqueous Reactions. Search for:. Types of Aqueous Solutions Electrolyte and Nonelectrolyte Solutions Unlike nonelectrolytes, electrolytes contain dissolved ions that enable them to easily conduct electricity. Learning Objectives Recognize the properties of an electrolyte solution.
Key Takeaways Key Points Electrolytes are salts or molecules that ionize completely in solution. As a result, electrolyte solutions readily conduct electricity. Nonelectrolytes do not dissociate into ions in solution; nonelectrolyte solutions do not, therefore, conduct electricity. Key Terms nonelectrolyte : A substance that does not dissociate into ions when in solution.
Learning Objectives Explain why some molecules do not dissolve in water. Key Takeaways Key Points Water dissociates salts by separating the cations and anions and forming new interactions between the water and ions. Water dissolves many biomolecules, because they are polar and therefore hydrophilic.
Key Terms dissociation : The process by which a compound or complex body breaks up into simpler constituents such as atoms or ions, usually reversibly.
Electrolytic Properties When electrodes are placed in an electrolyte solution and a voltage is applied, the electrolyte will conduct electricity. Learning Objectives Use a table of standard reduction potentials to determine which species in solution will be reduced or oxidized. Key Takeaways Key Points When an electrical current passes through a solution often of electrolytes , a cation or neutral molecule gets reduced at the cathode, and an anion or neutral molecule gets oxidized at the anode.
An aqueous solution of an electrolyte usually conducts an electric current. Generally, water soluble ionic compounds are electrolytes. They are electrolytes because ionic compounds consist of oppositely charged ions held together by an ionic bond. As a result, when these ionic compounds dissolve, their ions usually gain the freedom to move about in solution.
To read more about weak and strong electrolyte, click here. An example is mercury II chloride seen in the Figure above. For a M HgCl 2 solution the meter reading shows only about 0. When the solid dissolves, most of these molecules remain intact, but a few dissociate into ions according to the equation. The double arrows indicate that the ionization proceeds only to a limited extent and an equilibrium state is attained. Since only 0. Conductivity measurements can tell us more than whether a substance is a strong, a weak, or a nonelectrolyte.
At the rather low concentration of 0. Closer examination of the data for strong electrolytes reveals that some compounds which contain H or OH groups [such as HCl or Ba OH 2 ] conduct unusually well. A potential difference of 1. There is a simple reason for this behavior. Under similar conditions, most ions move through water at comparable speeds.
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