Post-lab 4 Qualitative-problems-1

Post-lab 4 Qualitative-problems-1 - wetsel (zpw67) Post-lab...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: wetsel (zpw67) Post-lab 4 Qualitative lyon (51900) 1 This print-out should have 21 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points A variety of ions including Na + , K + , NH 4 + , Pb 2+ , Fe 2+ , NO 3- , Cl- , Br- , S 2- , and CO 3 2- are mixed in a beaker of water. If you analyzed the precipitates, which substances would you expect to find? 1. NaNO 3 and K 2 S 2. PbS and FeCO 3 3. FeCO 3 and KNO 3 4. FeCl 2 and KCl 5. FeS and Na 2 CO 3 6. PbCO 3 and NaCl 7. NaBr and Pb(NO 3 ) 2 002 (part 1 of 2) 10.0 points Identify the correct net ionic equation for the formation of copper (II) phosphate precipi- tate from solution. 1. 2 Cu 2+ (aq) + PO 3- 4 (aq) Cu 2 PO 4 (s) 2. 3 Co 2+ (aq) + 2 PO 3- 4 (aq) Co 3 (PO 4 ) 2 (s) 3. 2 Co 2+ (aq) + PO 3- 4 (aq) Co 2 PO 4 (s) 4. 3 Cu 2+ (aq) + 2 PO 3- 4 (aq) Cu 3 (PO 4 ) 2 (s) 5. Cu + (aq) + PO- 4 (aq) CuPO 4 (s) 6. 2 Cu 2+ (aq) + P3- (aq) Cu 3 P 2 (s) 7. Cu 2+ (aq) + PO 3- 4 (aq) Cu 3 (PO 4 ) 2 (s) 003 (part 2 of 2) 10.0 points Identify the correct net ionic equation for the formation of tin (IV) sulfide precipitate from solution. 1. Ti 4+ (aq) + 2 S 2- (aq) TiS 2 (s) 2. 2 Ti 2+ (aq) + S 2- (aq) TiS(s) 3. Sn 4+ (aq) + 2 S 2- (aq) SnS 2 (s) 4. 4 Sn 2+ (aq) + 4 S 2- (aq) 4 SnS(s) 5. 4 Sn 4+ (aq) + 2 S 2- (aq) 2 Sn 2 S(s) 004 (part 1 of 4) 10.0 points In each of the following four situations, imagine that you have two unlabeled beakers in front of you which contain the two solu- tions listed. For each set of solutions, select a reagent from the list provided that could be added to both beakers in order to make a dis- tinction between the two solutions. In each case identify the precipitate that is formed. Situation 1) BaCl 2 and Ba(ClO 3 ) 2 1. Add NaCl to form barium chloride 2. Add AgNO 3 to form silver chloride 3. Add K 2 CrO 4 to form barium chromate 4. Add K 2 CrO 4 to form potassium chlorate 5. Add Na 3 PO 4 to form barium phosphate...
View Full Document

This note was uploaded on 07/18/2011 for the course CH 204 taught by Professor Leytner during the Spring '08 term at University of Texas at Austin.

Page1 / 5

Post-lab 4 Qualitative-problems-1 - wetsel (zpw67) Post-lab...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online