PPT-Solution Preparation and Dilutions

Solution Preparation How do we create chemical solutions in a laboratory setting with a certain concentrationmolarity Obtain the mass of the chemical compound serving as solute Dissolve the solute in a small amount of the solvent. A true story. Standards. Science: Chemistry . 6.d. Students know how to calculate the . concentration . of a . solution.. Investigation and Experimentation. . 1a. Select and use appropriate tools. What are serial dilutions?. Also called a “dilution series”, serial dilutions are, essentially, . dilutions of dilutions. .. Why do we need serial dilutions?. This flask contains 10 mg/mL Green Fluorescent Protein (GFP)*. An Introduction. Activity overview. In this activity you will visualize what is meant by a ‘dilution’.. You will also examine how to express the dilution that has been made.. Part I: Dilutions made with food coloring. Learning Goals …. … calculate how to prepare a solution. by diluting a stock solution. … calculate . how to prepare . a solution by adding a solid compound to water. We can prepare a solution one of two ways:. Stock solutions are concentrated, we use water to dilute them to achieve the molarity desired for a solution.. Dilution. – the process of adding more solvent to a solution . Decreases. Remains constant. Introduction To Medical Technology. Lecture . - . 7 . Solution is a homogeneous mixture of two or more substances. . Solute is the dissolved substance, whereas solvent is a substance in which solutes dissolves to make the mixture. . Intro to Spectrophotometry. Solutions. Solution: . a homogenous mixture of two or more substances in the same phase.. Solute: . substance dissolved in another substance (the solvent). Solvent: . substance that dissolves a solute, resulting in a solution. Lecture 2. Preparation of Solutions. It could be prepared either from:. 1- Solid material.. 2-Liquid.. Preparation of Solutions from Solid Material. In general it follows a 4 . steps. :. Weigh . the . Solutions Expressed as percent. The term . percent. . is Greek for . per 100. . When concentration is expressed in terms of percent, the numerator is the amount of solute and the denominator is 100 units of total solution.. Director of Research. Royal London Hospital for Integrated Medicine. Member, WHO expert panel on Traditional & Complementary Medicine . Member, Advisory and Editorial Board, Cochrane Collaboration . Molarity and Dilutions. E.Q.: . How is the concentration of a solution calculated . (. molarity)?. Molarity. Molarity. – . Measurement of the concentration of a solution (how much solute is in a volume of solution). Add solvent. Remove solute. C. 1. V. 1. = C. 2. V. 2. C1 = initial concentration. V1 = volume of concentrated solution. C2 = final concentration . V2 = volume of diluted solution. Examples. What is the concentration of the solution if 25mL of a 2.0mol/L . Sodium hydroxide are always coated with thin layer of sodium carbonate as a result of reaction of hydroxide with atmospheric carbon dioxide (CO. 2. ).. Pure sodium . hydroxide cannot be obtained; so that a standard solution of NaOH cannot be prepared by dissolving a known weight in a definite volume of water. Therefore . of Chemical substances. Methods of Chemicals . Preparation.  . A) Molarity:. Molarity (M):. . Number of moles in one liter of solution, expressed as M. Unit (mol/L). M = (no. of mole of solute) / (volume of .