PPT-Molarity

Solutions Molarity M Is the number of moles of solute dissolved per Liter of solution Also know as molar concentration Unit M is read as molar To calculate a solutions molarity you must know the volume of the solution and the amount of dissolved solute. Phys. Chem. 3807 Houston, Houston, Texas 77204-5641 Technology, Cambridge, Massachusetts and George Whitesides* Cambridge, Massachusetts Form: October for diffusion-controlled reactions Introdu Dr. Prem D. Sattsangi. Copyright © 2009. 1. Molar Absorptivity. Define Molar Absorptivity. Calculate the molar absorptivity with the following data. 1.25 x 10. -4. M solution has 0.45 O.D. absorbance at the . Colligative. Properties. Chemistry GT 5/8/15. Drill. Use the table from pg.. . 9. . to give the amount of substances that will dissolve in 100 . g. of H. 2. O:. NH. 3. at 10°C and 80°C. Why does solubility of NH. Molarity The concentration of a solution is a measure of the amount of solute that is dissolved in a given quantity of solvent. – A dilute solution is one that contains a small amount of Chapter 7.3. Objectives. Explain the meaning of solubility and compare the solubility of various substances.. Describe dilute, concentrated, saturated, unsaturated, and super-saturated solutions.. Relate changes in temperature and pressure to changes in solubility of solid and gaseous solutes.. Units of Concentration . Molality (. m. ) . aka “. molal. concentration”. . Solvent= does not include solute. Molarity (. M. ) . aka “molar concentration”. Most common concentration unit in Chemistry. Mechanisms. C483 Spring 2013. Questions. 1. . Replacement of the amino acid ________ at or near an active site of an enzyme is more likely to change enzyme activity than the replacement of ________ at or near the active site.. SOLUTIONS & CONCENTRATIONS. WHAT IS A SOLUTION ?. WHAT IS CONCENTRATION & HOW IS IT MEASURED ?. IS DISSOLVING A CHEMICAL OF A PHYSICAL PROCESS ?. IF SUGAR IS DISSOLVED IN WATER IS ITS CHEMICAL NATURE CHANGED ?. Molarity and Dilution. CONCENTRATION. Concentration. - a . measure of the . amount . of solute that is dissolved in a given . amount . of solvent. . QUALITATIVE: . (tells about . the . quality, . not a #). Substance. that changes . color. in the presence of an . acid . or a . base. Red or Blue Litmus. Phenolphthalein (. phth. ). Bromothymol. blue (blue food coloring). Red cabbage juice. Episode 1102. In a dilution, a solvent, usually water, is added to a solution, which increases its volume and decreases the concentration of the solution. Making orange juice from concentrate is an example of a dilution. . Dr. Prem D. Sattsangi. Copyright © 2009. 1. Molar Absorptivity. Define Molar Absorptivity. Calculate the molar absorptivity with the following data. 1.25 x 10. -4. M solution has 0.45 O.D. absorbance at the . Standard Deviation. Standard Deviation – measure . how spread out the data is from the mean. Lower standard deviation:. Data is . closer to the mean. Greater likelihood that the independent variable is causing the changes in the dependent variable. M. ). number . of . moles of solute . (n) per . liter (L). of . solution. Molarity (. M. ) = . Moles of Solute. . Liters of Solution. Note: Moles = . Mass of Solute. Molar Mass of Solute.