Saturday, September 6, 2014

. (Atkins, 2006).


A solution is a mixture of two or more substances that can be distinguished particle tidah and escaped from the filter paper. The solution has the properties of homogeneous as well as a substance scifinder login that is mixed and then reacted, but a solution of each substance still maintain the original properties. An example of a solution of water and sugar is sugar which is still sweet. Unlike the case with a mixture of hydrogen with oxygen which later became water where flammable oxygen shut off the water while the fire (chang, 2003).
The substance is incorporated in the solution scifinder login is the solvent and solute. The solvent is the substance that is dissolved more and less substance. Example, five grams of sugar in 250 ml of water. Water is the solvent and sugar is dissolved (chang, 2003).
As with clams reaction, dissolving a substance also memepunyai sesetimbangan point that when the amount of solute that dissolves together with the deposition of the dissolved solute. From this statement it can be obtained three types of solution that the solution is not saturated, unsaturated and supersaturated. Unsaturated solute dissolves yet reached equilibrium, saturated if appropriate dissolved substances at equilibrium and supersaturated scifinder login if more dissolved solute than equilibrium point (Monk, 2004).
The process of mixing scifinder login of the solute with solvent called dissolution. The ability of a substance to dissolve in the solvent at a given temperature is called the solubility. Dissolution and solubility of a substance in a substance B will be different with a substance in the substance scifinder login C. This shows the tendency of prices solubility and soluble scifinder login process. The difference of dissolution and solubility are at the same temperature, dissolution can be influenced by the presence of stirring while the solubility is not. Factors affecting solubility include:
c. Effects similar ion: ion similar to the process will affect the equilibrium solubility. scifinder login Example: scifinder login AgCl salt solution will decrease if the added Ag + ions because the equilibrium scifinder login constants will remain but there are species that grow so inevitably the system to reach equilibrium will act so that equilibrium is reached again, in this case the equilibrium is shifted towards AgCl so that its solubility decreases.
g. Influence complex: slightly soluble Solubility garanm scifinder login a function of the concentration of other substances scifinder login that form complexes with the cations of the salt. Example: scifinder login the addition of NH 4 OH in a solution of AgCl, firing his addition of solubility as formed complex [Ag (NH 3) 2] + (Khopkar, 1990).
Fator-factors mentioned above are closely related to the principle of Le 'Chatelier and Van't Hoff equation. Le 'Chatelier states that if the action is held equilibrium system, then the system will hold the reaction such that the effect of the action scifinder login becomes the smallest. Changes from the original equilibrium state to a new state of equilibrium due to the action scifinder login or influence from outside the known equilibrium shift (Attkins, 2006).
Dissolution as well as the chemical reactions that require or alor release. Heat is released or received by the system is called the enthalpy of dissolution solution. Enthalpy becomes one of determining who will memebentuk kesepontanan scifinder login as a linear function of T. Thus the constants in the function of Van't Hoff equation here about pengeruh temperature scifinder login can be lowered. scifinder login Having in mind that -, the temperature variation of ln Kp is
=

=
. (Atkins, 2006).
Titration is the way of analysis that allows us to download

No comments:

Post a Comment