Adsorption experim ent Reaction between FeS and HCl: wwww FeS+2HC1-FeCl2+H2S Reaction on filtration sheet: H2S+Pb(CH:CO0)2-PbS+2CH3COOH STEP1 Put some FeS particles into a big tube. Add1 or 2 mL of 18% HCl solution onto FeS particles. Immediately close the tube with Pb(NO3)2 or Pb(CH:COO)2 immersed wwwww filtration sheet. 1. Why filtration sheet turned black in step1? STEP2 Put some Fes particles into a big tube. Fix the "glass funnel" (glass pipette) to the tube after adding HCl solution. Close the outlet of funnel with Pb(NO3)2 or Pb(CH:COO)2 immersed filtration sheet. 1. Why filtration sheet didn't turn black in step2 ?
Adsorption experim ent Reaction between FeS and HCl: wwww FeS+2HC1-FeCl2+H2S Reaction on filtration sheet: H2S+Pb(CH:CO0)2-PbS+2CH3COOH STEP1 Put some FeS particles into a big tube. Add1 or 2 mL of 18% HCl solution onto FeS particles. Immediately close the tube with Pb(NO3)2 or Pb(CH:COO)2 immersed wwwww filtration sheet. 1. Why filtration sheet turned black in step1? STEP2 Put some Fes particles into a big tube. Fix the "glass funnel" (glass pipette) to the tube after adding HCl solution. Close the outlet of funnel with Pb(NO3)2 or Pb(CH:COO)2 immersed filtration sheet. 1. Why filtration sheet didn't turn black in step2 ?
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter9: Atomic Absorption And Atomic Fluorescence Spectrometry
Section: Chapter Questions
Problem 9.22QAP: The chromium in an aqueous sample was determined by pipetting 10.0 ml. of the unknown into each of...
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