Molarity interconverting moles

Express concentration in terms of molarity, molality, mole fraction, and parts by mass or by volume and be able to interconvert these terms ( 13.4) (SPs 13.3-13.5) (EPs 13.37-13.58)... 

The value of does not depend on the medium composition, and in principle this is the only equilibrium constant needed. However, since activities of substrates and products are often hard to get at, concentration-based equilibrium constants are often used instead. Concentrations can, for example, be expressed as molar ratios (xA, etc.). For each substrate or product, mole ratio and activity can be interconverted using activity coefficients (yA, etc), where aA = yA xA. 

Interconvert mass, number of moles, number of molecules, and (using density) the molar volume of a substance (Section 2.f, Problems f-12). 

The concentration of a solution can be expressed in different terms (molarity, molality, parts by mass, parts by volume, and mole fraction). Because a concentration is a ratio involving mass, volume, and/or amount (mol), the various terms are interconvertible. 

Research workers are not consistent in the use of concentrahon units, and solubility relations, for example, may be based on mole fraction. Therefore it often becomes necessary to interconvert concentration units. To convert weight/weight values to molar concentration one must know the density of the soluhon. For example, what would be the molar concentration of a 2% aqueous solution of glycerol (MW, 92 g moP ) whose density at 25°C is 1.0030 g mL ... 

SECTION 4.5 The concentration of a solution expresses the amount of a solute dissolved in the solution. One of the common ways to express the concentration of a solute is in terms of molarity. The molarity of a solution is the number of moles of solute per liter of solution. Molarity makes it possible to interconvert solution volume and number of moles of solute. Solutions of known molarity can be formed either by weighing out the solute and diluting it to a known volume or by the diution of a more concentrated solution of known concentration (a stock solution). Adding solvent to the solution (the process of dilution) decreases the concentration of the solute without changing the number of moles of solute in the solution... 

The concentration of a solution is expressed through different concentration terms, including molarity, molality, mass percent, volume percent, and mole fraction. These terms are interconvertible. Section 13.4)... 

Molar mass and Avogadro s number can be used to interconvert among mass, moles, and number cf particles (atoms, molecules, ions, formula units, etc.). 

---