Write the chemical equation involved silver nitrate test. And explain in your own words, the importance of silver nitrate test Expt. 8: VOLUMETRIC DETERMINATION OF CALCIUM AS OXALATESample preparation: the sample is a solution containing a known weight of CaCO, dissolved in6N or 3N HCI and diluted to a definite volume. Aliquot portions are givenas unknown samples.Procedure for Analysis:Dilute the unknown sample to 250 ml with distilled water (DW) and then 10.00 ml aliquotis taken for analysis.1. Dilute the 10.00 ml aliquot to about 200 ml with DW.2. Heat the solution to 60° – 80°C and then add 4-5 drops of methyl orange indicator.3. Dissolve 1-1.5 grams ammonium oxalate, (NH,)½C204, in 50 ml of DW and then add to thesample solution.4. Bring the solution to a boil and then add 6N NH,OH SLOWLY from a pipet until the indicatorshows a change of color. Stir vigorously during the addition.5. Allow the solution to stand for at least 30 minutes, but NO longer than 1 hour before filtration6. Filter, first by decantation through a special type of filter paper.7. Wash with 10 ml portions of COLD (chilled) DW, adding each portion to the precipitationbeaker (1 liter) and pouring from this to the filtering medium. Drain each portion of washbefore adding the next.8. After the 4th washing, test a portion of the filtrate for chloride ions using a drop of HNO, anda drop of AGNO3. Continue washing until only a faint cloudiness (or much better = CLEARsolution) is obtained. Discard filtrate and washings.9. Make a hole in the apex of the filter paper and wash the precipitate with a stream of HOT DWinto the precipitation beaker (1 liter).10. Pour a mixture of 9.0 ml concentrated H;SO, and 150 ml of DW over the filter paper. Washthoroughly with HOT DW.11. Heat the solution to 80° – 90°C to dissolve the precipitate.12. Titrate AT ONCE with Std. KMNO, solution until endpoint is reached. STOICHIOMETRY:1. Net meq of the titrant used:(ml KMN0, x N KMN0,) – (ml Ferous soln x N Ferous soln)2. # of grams Ca (in the aliquot):grams of Ca = meq KMN04 x mewt Ca3. # of grams of Ca (in the sample given by the Lab Instructor to Students):1grams of Ca (given sample) = (net) meq KMN0, x mewt Ca x 250 ml x10 mlORgrams Ca (given sample) = grams Ca in aliquot x 250 ml10 mlOVERALL EQUATION:(N x ml)kMn0, X(AW of Ca2000x 250 mlgrams Ca (Given Sample) =-10 mlтеq кMп0, х тewt Ca x 250 mlgrams Ca (Given Sample) :10 ml

Silver nitrate test is used for the qualitative analysis of chloride ions.

Answered: Write the chemical equation involved…

Write the chemical equation involved silver nitrate test. And explain in your own words, the importance of silver nitrate test

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.22QAP

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