In each blank, try to type in the
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If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. Term: ChelateDefinition: a compound containing a ligand (typically organic) bonded to a central metal atom at two or more . Term: complexometric Definition: is a form of volumetric analysis in the formation of a colored complex is used to indicate the end point of a titration. Term: titrationDefinition: a way to determine the contents of a substance . Term: displacement Definition: Here the analyte is treated with an excess of a second metal bound to EDTA. The analyte ion the second metal from the EDTA complex Term: Lewis Definition: electron pair Term: Lewis Definition: electron pair Term: Definition: an atom or group of atoms to whatever atom you are interested in Term: ligandDefinition: ligand that to a metal ion through only one atom Term: ligandDefinition: to the metal ligand through more than one ligand atom Term: AliquotDefinition: portion that represents a Term: aliquot Definition: portion of solution Term: Definition: substance that is analysis (substance being measured) Term: analytical Definition: concentration when you something and dissolve it→ the total number of moles in Term: equilibrium Definition: the actual Term: Definition: m/v Term: Definition: solute/ L solution Term: weightDefinition: molar mass ( mass of a molecule) calculated as the sum of the mass of each constituent atom by the number of atoms of that element in the molecular formula Term: percentDefinition: weight / mL sample Term: qualitative Definition: identifying what is in an Term: analysisDefinition: identifying how much is Term: analysisDefinition: mass of is measured to determine how much unknown was present Term: analytical Definition: measure to 4 places Term: Definition: used to titrate→ goes to 4 s.f. measures in Term: Definition: drying in dessicator Term: Definition: closed chamber containing drying agent—to keep dried Term: direct Definition: directly on balance Term: hygroscopicDefinition: / attracts moisture from air Term: indirect Definition: weigh by difference—do not onto balance Term: Definition: curvature of liquid caused by tension Term: pipetDefinition: used to known amount of liquid- can go to 4 s.f. Term: tareDefinition: 0 a Term: top-loading Definition: to 2 decimal places Term: volumetric Definition: calibrated to contain certain vol of liquid at 20 degrees celcius when bottom of in in the right spot Term: parallax Definition: that occurs when your eye is not at the same height as the meniscus Term: Definition: difference between delivered and volume Term: determinate Definition: if measurement made same way (correctable) Term: errorDefinition: (random )- from experiment Term: precisionDefinition: reproducibility of replicate Term: degrees of Definition: where n is number of data Term: intervalDefinition: range of values in there is a specified probability of finding the true mean Term: distributionDefinition: characterized by a mean and standard deviation—mean is of distribution and standard deviation is width→ (bell shaped curve) Term: student’s t Definition: statistical tool used to express confidence intervals and to results from different experiments Term: Absorbance→Definition: most useful quantitity for chemical analysis (A)—higher the Term: absorbance →Definition: graph showing how A (or ) varies with wavelength
Beer's law→ Term: curve→Definition: absorbance at one wavelength is plotted against different in a series of standards Term: Definition: cell has flate Term: absorptivity→Definition: by epsilon Term: Definition: the use of electromagnetic radiation to measure chemical Term: transmittance Definition: the fraction of incident light that passes through a T=(P/Po) Term: wavelength→→Definition: crest- to- crest distance waves Term: AliquotDefinition: that represents a whole Term: factorDefinition: of total solution Term: analyteDefinition: substance that is undergoing analysis (substance measured) Term: analytical Definition: concentration when you something and dissolve it Term: concentrationDefinition: the concentration Term: Definition: m/v Term: molarityDefinition: solute/ L solution Term: molecular Definition: molar mass ( mass of a molecule) calculated as the sum of the mass of each atom multiplied by the number of atoms of that element in the molecular formula Term: percentDefinition: weight / mL sample Term: analysisDefinition: identifying what is in an Term: analysisDefinition: how much is present Term: gravimetric Definition: mass of is measured to determine how much unknown was present Term: analytical Definition: to 4 decimal places Term: Definition: used to Term: desiccantDefinition: drying agent in Term: Definition: closed containing drying agent—to keep samples dried Term: weighingDefinition: place directly on Term: Definition: absorbs/ moisture from air Term: indirect Definition: weigh by difference—do not onto balance Term: Definition: of liquid caused by surface tension Term: Definition: used to known amount of liquid- can go to 4 s.f. Term: tareDefinition: 0 a Term: top-loading Definition: measures to 2 decimal Term: flaskDefinition: calibrated to contain certain vol of liquid at 20 degrees celcius when bottom of meniscus in in the spot Term: parallax Definition: error that occurs when your eye is not at the same height as the Term: Definition: difference delivered and desired volume Term: determinate Definition: if measurement made same way (correctable) Term: indeterminate Definition: (random error)- from Term: precisionDefinition: of replicate deliveries Term: relative relative uncertainty?Definition: (Absolute uncertainty/magnitude of ) Term: precision (rsd)Definition: measurement of how close measurements are to each Term: systematic Definition: error in process or Term: degrees of Definition: (n-1) Term: intervalDefinition: range of values in which there is a specified probability of finding the true Term: distributionDefinition: characterized by a mean and standard deviation—mean is center of distribution and deviation is width (bell shaped curve) Term: standard Definition: of width of distribution Term: standard deviationDefinition: std deviation by mean Term: standard deviationDefinition: pooled standard deviation to make use of multiple sets of Term: testDefinition: test for an Term: t statisticDefinition: ratio of the departure of an estimated from its notional value and its standard error Term: p Definition: tells you if you can reject or accept your null Term: F testDefinition: to test if from two things are equal Term: t testDefinition: statistical tool used to confidence intervals and to compare results from different experiments Term: varianceDefinition: square of the standard Term: back Definition: of a standard reagent is added to analyte Term: titrationDefinition: contains everything except the analyte helps us see titration Term: end Definition: sudden change in physical property of Term: equivalence Definition: when the of titrant moles of analyte in their stoichiometric relationship Term: Definition: with a property that changes abruptly when titration is complete Term: standardDefinition: pure enough to weigh and use directly for of moles Term: standard Definition: solution containing quantity of analyte Term: Definition: titrating to concentration of titrant Term: titrantDefinition: known reagent Term: Definition: increments of a known are added to the analyte Term: titration Definition: difference endpoint and equivalence point Term: volumetric Definition: of known reagent required for complete reaction with analyte by a known reaction is measured Term: errorDefinition: dif btwn observed and true point Term: standard acids and basesDefinition: Term: Definition: bases Term: Na2CO3 and Definition: Term: Nitrogen determinationDefinition: one of the most used methods for determining Term: nitrogen in organic Definition: the solid is digested in boiling sulfuric acid to nitrogen into ammonium Term: ChelateDefinition: compound containing a (typically organic) bonded to a central metal atom at two or more points Term: complexometric Definition: for of volumetric analysis in which the formation of a colored is used to indicate the endpoint of a titration Term: titrationDefinition: way to determine the contents of a quantitatively Term: displacement Definition: analyte is treated with excess of a second bound to EDTA. The analyte ion displaces the second metal from the EDTA complex Term: titrationDefinition: another name for a back Term: formation Definition: equilibrium constant for reaction of a with a ligand. Also called stability constant Term: Lewis Definition: electron pair Term: baseDefinition: electron pair Term: LigandDefinition: atom or group of atoms to whatever atom you are interested in Term: masking Definition: prevents impurities from reacting with the Term: monodentate Definition: ligand that bonds to a metal through only one Term: multidentate Definition: binds to the ligand through more than one ligand atom Term: indicatorDefinition: used in Fajans Term: argentometric Definition: titrations Ag+ Term: titrationDefinition: adsorption of a indicator on the precipitate at the end point Term: Mohr Definition: determination of a chloride by precipitation titration with nitrate Term: Vollhard Definition: formation of a Term: Definition: when a reducing analyte is titrated wIth Term: iodometryDefinition: titration Of iodine produced when oxidizing is added to excess I- Term: Definition: most useful quantitity for chemical (A)—higher the absorbance Term: absorbance Definition: graph showing how A (or epsilon) with wavelength Term: Beer's Definition: dependence on and path length Term: curveDefinition: absorbance at one wavelength is plotted against different in a series of standards Term: Definition: cell has flate Term: absorptivityDefinition: symbolized by Term: Definition: the use of radiation to measure chemical concentrations Term: Definition: the of incident light that passes through a sample TEquals(P/Po) Term: Definition: - to- crest distance between waves |
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