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48 Group III Cations Scheme Fo”, Ni, Cr", Alto 3% H2O2 (Step 3) 6M NaOH (Step...
Group III dry lab: Refer to the procedures in your lab manual. Fill in the blanks...
Group III dry lab: Refer to the procedures in your lab manual. Fill in the blanks and complete the questions on the next page FeN2.C.AP 3% H., (Step 3) 6M N OH (Step 4) Heat (Step 5) Fe(OH), (brown solid) Ni(OH)(green solid) (Black solid, Step 6) CO2. JANON (Yellow solution, Step) 1 15M HNO, (Step 7) IM NHACI (Step 8) 15M NH,OH/NH, (Step 9)/Spin (Step 10) 15M HINO, (Step 14) 6M NILOHNH. (Step 15) . fe AKOH) White gel Step...
43 Group II Cations Scheme Biº. Cu?, Sb 15 M NHOHNH, (Step 2) 0.3 M HCI...
43 Group II Cations Scheme Biº. Cu?, Sb 15 M NHOHNH, (Step 2) 0.3 M HCI (Step 3) 1M CHCSNH (Step 4)/Centrifuge (Step 5) Discard solution after testing for completeness of precipitation "For the General Unknown only use the solution to test for Group Ications. BiSs. Cus, Sb S. SnS (Black Solid, Step 6) 1 1MNH.CI (Step 6) GM KOH, IM CHCSNH (Step 7) Centrifuge (Step B) Bi S. Cus (Solid, Step 9) Sb(OH). ( SOH). (Solution, Step 9) 6M...
3. A solution that may contain any of the group III cations. Treatment of the solution with CIO i...
3. A solution that may contain any of the group III cations. Treatment of the solution with CIO in alkaline medium yields a yellow solution and a colored precipitate. The acidified solution is unaffected by treatment with NH,OH. The colored precipitate dissolves in nitric acid; addition of excess NH,OH to this acidic solution produces only a blue solution. Which group III ions are present? Which are absent? Which are in doubt? How would you remove all doubt?
3. A solution...
3. A solution that may contain any of the group III cations. Treatment of the solution...
3. A solution that may contain any of the group III cations. Treatment of the solution with CIO in alkaline medium yields a yellow solution and a colored precipitate. The acidified solution is unaffected by treatment with NH,OH. The colored precipitate dissolves in nitric acid; addition of excess NH,OH to this acidic solution produces only a blue solution. Which group III ions are present? Which are absent? Which are in doubt? How would you remove all doubt? 149
Sect. Date Name Prelaboratory Assignment: Qualitative Analysis Group III Cations 1. Prepare a complete flow chart...
Sect. Date Name Prelaboratory Assignment: Qualitative Analysis Group III Cations 1. Prepare a complete flow chart for the procedure and put it on your data sheet. 2. Write balanced net ionic equations describing each of the following reactions: Dissolution of Ni(OH), in nitric acid. Oxidation of Cr'to Cr by CIO in alkaline solution (CIO is converted to CI') The confirming test for Fe 3. A solution that may contain any of the group II cations. Treatment of the solution with...
DATA TABLE STEP 1 AgNO3 1,C,,2 STEP 3 Ba(NO3)2 SO - Decant white BaSO4 ppt (CONFIRMS...
DATA TABLE STEP 1 AgNO3 1,C,,2 STEP 3 Ba(NO3)2 SO - Decant white BaSO4 ppt (CONFIRMS SO2-) yellow Agl. AgCl ppt NH,OH yellow Agl. AgCl ppt RECYCLE Chemical Waste HNO blue litmus Decant white AgC ppt (CONFIRMS CT) yellow Agl.ppt (CONFIRMST) red spot 6. Refer to the Data Table to determine which anions (I-, Cl-, SO42-) are present and absent in an unknown solution given the following observations. • The unknown solution in test tube #1 plus AgNO3 gives a...
Pre-Lab for Qualitative Analysis of Silver Group I Cations Lab 1. What are the ions that...
Pre-Lab for Qualitative Analysis of Silver Group I Cations Lab 1. What are the ions that are considered Group I cations? 2. Based on the Activities Series of Elements, explain why Group I ions would form precipitates when a strong, concentrated acid (such as HCI) is added to them. 3. Pby, and K Cro, will react with each other to form a precipitate if the concentrations are high enough. Write the complete, balanced equation for the reaction of Pbs and...
need help with #20 and #48 please add proper charges, balanced equation, and proper subscript (aq,solid,liquid,...
need help with #20 and #48 please add proper charges, balanced
equation, and proper subscript (aq,solid,liquid, or gas)
20. Give the formula for a chemical substance that will yield a precipitate with CoCl2 solution, but not with ZnCl, solution (if excess of substance is required, so state). Include net ionic equations for any reactions that occur. ANALYSIS OF THE ALUMINUM-NICKEL GROUP (GROUP III) Solutions containing Fo?", Fe, Co, Nid", Mn?, Art, Cr". Zn?N, Ba?". Ca, Mg, Na, K [NHACI, excess...
EXPERIMENTAL PROCEDURE: GROUP I CATIONS Test a known solution that contains all 3 cations simultancously with...
EXPERIMENTAL PROCEDURE: GROUP I CATIONS Test a known solution that contains all 3 cations simultancously with your unknown. Follow the same procedure (separately) for both the unknown and known solutions. Wear gloves during all procedures. STEP 1: Precipitation of Group I. To 10 drops (only!) of the solution to be analyzed, add 2 drops 6 M HCl. Stir well. Centrifuge and decant the solution (S1) from the ppt (P1). Treat the ppt Pl according to Step 2. (There is no...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What,...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What, if anything, should you do to test for Co2 and Ni*? Qual Scheme: Group III: Co?(pink), N1" (green), Fet+ (yellow), Cr" (blue-grey), Mn(pink), AP (colorless), Zn? (colorless). Unknown B Solution: Use 10 dps of unknown sample and 10 dps of H20 and go to Procedure for Group III. Procedure for Group II: Add 2 dps NHCl soln, add 6M NHOH until just basic to...
Group III dry lab: Refer to the procedures in your lab manual. Fill in the blanks and complete the questions on the next page FeN2.C.AP 3% H., (Step 3) 6M N OH (Step 4) Heat (Step 5) Fe(OH), (brown solid) Ni(OH)(green solid) (Black solid, Step 6) CO2. JANON (Yellow solution, Step) 1 15M HNO, (Step 7) IM NHACI (Step 8) 15M NH,OH/NH, (Step 9)/Spin (Step 10) 15M HINO, (Step 14) 6M NILOHNH. (Step 15) . fe AKOH) White gel Step...
43 Group II Cations Scheme Biº. Cu?, Sb 15 M NHOHNH, (Step 2) 0.3 M HCI (Step 3) 1M CHCSNH (Step 4)/Centrifuge (Step 5) Discard solution after testing for completeness of precipitation "For the General Unknown only use the solution to test for Group Ications. BiSs. Cus, Sb S. SnS (Black Solid, Step 6) 1 1MNH.CI (Step 6) GM KOH, IM CHCSNH (Step 7) Centrifuge (Step B) Bi S. Cus (Solid, Step 9) Sb(OH). ( SOH). (Solution, Step 9) 6M...
3. A solution that may contain any of the group III cations. Treatment of the solution with CIO in alkaline medium yields a yellow solution and a colored precipitate. The acidified solution is unaffected by treatment with NH,OH. The colored precipitate dissolves in nitric acid; addition of excess NH,OH to this acidic solution produces only a blue solution. Which group III ions are present? Which are absent? Which are in doubt? How would you remove all doubt?
3. A solution...
3. A solution that may contain any of the group III cations. Treatment of the solution with CIO in alkaline medium yields a yellow solution and a colored precipitate. The acidified solution is unaffected by treatment with NH,OH. The colored precipitate dissolves in nitric acid; addition of excess NH,OH to this acidic solution produces only a blue solution. Which group III ions are present? Which are absent? Which are in doubt? How would you remove all doubt? 149
Sect. Date Name Prelaboratory Assignment: Qualitative Analysis Group III Cations 1. Prepare a complete flow chart for the procedure and put it on your data sheet. 2. Write balanced net ionic equations describing each of the following reactions: Dissolution of Ni(OH), in nitric acid. Oxidation of Cr'to Cr by CIO in alkaline solution (CIO is converted to CI') The confirming test for Fe 3. A solution that may contain any of the group II cations. Treatment of the solution with...
DATA TABLE STEP 1 AgNO3 1,C,,2 STEP 3 Ba(NO3)2 SO - Decant white BaSO4 ppt (CONFIRMS SO2-) yellow Agl. AgCl ppt NH,OH yellow Agl. AgCl ppt RECYCLE Chemical Waste HNO blue litmus Decant white AgC ppt (CONFIRMS CT) yellow Agl.ppt (CONFIRMST) red spot 6. Refer to the Data Table to determine which anions (I-, Cl-, SO42-) are present and absent in an unknown solution given the following observations. • The unknown solution in test tube #1 plus AgNO3 gives a...
Pre-Lab for Qualitative Analysis of Silver Group I Cations Lab 1. What are the ions that are considered Group I cations? 2. Based on the Activities Series of Elements, explain why Group I ions would form precipitates when a strong, concentrated acid (such as HCI) is added to them. 3. Pby, and K Cro, will react with each other to form a precipitate if the concentrations are high enough. Write the complete, balanced equation for the reaction of Pbs and...
need help with #20 and #48 please add proper charges, balanced
equation, and proper subscript (aq,solid,liquid, or gas)
20. Give the formula for a chemical substance that will yield a precipitate with CoCl2 solution, but not with ZnCl, solution (if excess of substance is required, so state). Include net ionic equations for any reactions that occur. ANALYSIS OF THE ALUMINUM-NICKEL GROUP (GROUP III) Solutions containing Fo?", Fe, Co, Nid", Mn?, Art, Cr". Zn?N, Ba?". Ca, Mg, Na, K [NHACI, excess...
EXPERIMENTAL PROCEDURE: GROUP I CATIONS Test a known solution that contains all 3 cations simultancously with your unknown. Follow the same procedure (separately) for both the unknown and known solutions. Wear gloves during all procedures. STEP 1: Precipitation of Group I. To 10 drops (only!) of the solution to be analyzed, add 2 drops 6 M HCl. Stir well. Centrifuge and decant the solution (S1) from the ppt (P1). Treat the ppt Pl according to Step 2. (There is no...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What, if anything, should you do to test for Co2 and Ni*? Qual Scheme: Group III: Co?(pink), N1" (green), Fet+ (yellow), Cr" (blue-grey), Mn(pink), AP (colorless), Zn? (colorless). Unknown B Solution: Use 10 dps of unknown sample and 10 dps of H20 and go to Procedure for Group III. Procedure for Group II: Add 2 dps NHCl soln, add 6M NHOH until just basic to...
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