Q Test 1

provides information about the identity of the species or functional groups in the sample

provides numerical information of analyte

wet chemical methods such as precipitation, extraction, distillation, boiling or melting points, gravimetric and titrimetric measurements

analytical measurements are made using instrumentation

gravimetric, volumtric, electroanalytical, spectroscopic, and miscellaneous

determine the mass of the analyte or some compound chemically related to it

the volume of a solution containing sufficient reagent to react completely with the analyte that is measured

based on measurement of the interaction between electromagnetic radiation and analyte atoms or molecules

separation techniques and quantitation is based on calibration curve

involve the measurement of electrical properties such as voltage, current, resistance and quantity of electrical charge

Sampling, sample preparation, analyze, and interpret

the sample being analyzed

Pick a method, acquire sample, process sample, eliminate interferences, calibration and measurement, calculating and evaluating results

reagent grade, primary-standard grade, and special-purpose reagent chemicals

1. the best grade, smallest bottle
2. never return any excess reagent to a bottle
3. never insert spatulas, spoons, or knives into a bottle

sudden, often violent boiling that tends to spatter solution out of its container

oxidation of the organic constituents of a sample with oxidizing reagents such as HNO3, H2SO4, H2O2, or aqueous Br2, or a combination

160-200g, + or - 0.1 mg

10-30g, + or - 0.01 mg

1-3g, + or - 0.001 mg

weighing error that develops when the object being weighed has a significantly different density than the weights

device for drying substances or objects

pouring a liquid gently so as to not distrub a solid in the bottom of the container

a solid moves up the side of a wetted container or filter paper

pipet, buret, and volumetric flask

the apparaent displacement of a liquid level

the curved surface of a liquid at its interface with the atmosphere

mass / molar mass

moles / liters

weight solute / weight solution x 100

mass of solute / mass of solution x 10^6

mass of solute / mass of solution x 10^9