Analytical Chemistry

ppm correct answers (grams analyte/grams sample)x10^6 Molarity correct answers moles analyte/liter of solution Volume Percent correct answers (volume solute/volume soution)x100 Volume ppm correct answers (volume solute/volume solution)x10^6 kilo- correct answers 10^3 deci- correct answers 10^-1 centi- correct answers 10^-2 milli- correct answers 10^-3 micro- correct answers 10^-6 nano- correct answers 10^-9 pico- correct answers 10^-12 femto- correct answers 10^-...

Analytical chemistryprovides the tools to make qualitative and quantitative measurements of components in complex samples classical methods'wet' gravimetric titrimetric complexometric and redox wet bench modern instrumental methodsspectroscopic, electrochemical chromatographic & electrophoretic Combination methods- used to achieve analytical accuracy slurrysuspention of solid & liquid supernatant liquidliquid above a pack solid

ANALYTICAL CHEMISTRY Branch of chemistry that deals with the separation, identification and composition of matter Gravimetric Method Measurement of mass of substance that is chemically related to the analyte Volumetric Method Measures the volume of solution necessary to read completely with the analyte. Spectroscopic Method Measures the electromagnetic radiation produced by the analyte or its interactions with it. Electroanalytic Method Measures the electrical properties of the analy...

What does an analytical chemist do? correct answers Identifying what is in an unknown is called qualitative analysis. Identifying how much is present is called quantitative analysis. Describe the steps in a chemical analysis. correct answers 1) What do you want to know? -What substance (analyte) are you looking for? 2) Select appropriate procedures -Literature Search -New Procedure 3) Gathering Representative Samples -Random heterogeneous material-Segregated heterogeneous material 4) Prepari...

ANALYTICAL CHEMISTRY correct answers Branch of chemistry that deals with the separation, identification and composition of matter Gravimetric Method correct answers Measurement of mass of substance that is chemically related to the analyte Volumetric Method correct answers Measures the volume of solution necessary to read completely with the analyte. Spectroscopic Method correct answers Measures the electromagnetic radiation produced by the analyte or its interactions with it. Electr...

Chapter 1 Ana. Chem. - A discipline that uses methods, instruments, and strategies to get info on the nature of a component in a sample - Qualitative [is it in the sample?] - Quantitative [how much is in the sample?] - Basis: properties of chem forms - Chem species [ atoms, molecules, ions, analyte] o CH4, CO2, CO3 – species of Carbon Analytical Approach - Define the problem - Obtain sample - Design the experimental method • Establish design criteria [accuracy, cost, speed] • Ev...

Analytical chemistry ACS Correctly Solved E relative - Answer -(|x1-x(true)|)/x(true) *100 standard deviation - Answer -sqrt((x1-x)^(2)+(x2-x)^(2))/(n-1) relative standard deviation - Answer -(s/x(mean))*100 relative uncertainty - Answer -(abs uncertainty)/measured value How are vol pipets calibrated? - Answer -For last drop to not be forced out TC - Answer -to contain TD - Answer -to deliver Tolerance - Answer -max permissible deviation of measured value propagation of uncertainty add ...