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3. a. What happens in Part Fl if conc NaOH is substituted for conc NH4OH? b....
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample...
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample should be identified first if it is indeed in the sample? 2. In what phase is the first cation supposed to be identified, in solid or liquid phase? And in what color? 3. According to the experimental procedure written above which cation in your sample should be identified second if it is indeed in the sample? 4. In what phase is the second cation...
2. The instructions for Solution IV describe the preparation of a buffer solution. a. Calculate t...
post lab questions?
2. The instructions for Solution IV describe the preparation of a buffer solution. a. Calculate the pH of this buffer solution if it has an equal concentration of NHs and NH4 b. Does this solution buffer in the acidic, basic, or nearly neutral pH range? Explain. c. Explain why it is necessary to provide a buffer solution at this point in the procedure. Solution IV Add 2 drops NH.CI solution and check the pH of the solution...
1. Write net ionic equations for ALL precipitation reactions of each anion studied in this e with Ag'(aq) and Ba (a), respectively, (in the absence of HNO,) at Bad 2 ptt disalv...
1. Write net ionic equations for ALL precipitation reactions of each anion studied in this e with Ag'(aq) and Ba (a), respectively, (in the absence of HNO,) at Bad 2 ptt disalve 51 과 IND Add about 10 drops of deionized water and 10 drops of 6 MNH, to the precipitate and mix thoroughly. Note that the Agl precipitate will persist; Agl is not soluble in NHs solution Confirmation Test for lodide Carry out confirmatory test for iodide as follow:...
Question: Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should...
Question:
Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should be performed concurrently on the known and the unknown solutions. Volumes are approximate. All work excepting the centrifugation should be done in the fume hood 1. To about 2. mL of your sample in a test tube, add 5 drops (-0.2 mL) of 6 M HCl(a). Mix well and centrifuge. Decant the clear liquid into a clean test tube and save it for Step...
What is the chemical reaction taking place here? I thought it was Zn(CN)2 but it is...
What is the chemical reaction taking place here? I thought it
was Zn(CN)2 but it is not a denim blue.
The Soluble Hydroxide Group: Analyze the Solution for the Presence of Znº and All 25. To test for All, add 10 drops of 6 M HNO, solution to Test Tube 5. Check the pH of the solution. If it is not acidic, add more 6 M HNO, dropwise until the solution becomes acidic. Add 6 M NH, solution dropwise until...
Write balanced net ionic equations for each anion experiment (B through F)
Write balanced net ionic equations for each anion experiment (B
through F)
B. IODIDE (I) 13. Place five drops of your anion solution in a test tube. Add five drops of 6 M HC,H,O, followed by two drops of 0.2 M KNO, A reddish-brown color confirms the presence of I (in I2). Record your results. С.BROMIDE (Br.) Place five drops of your anion solution in a test tube and add five drops of chlorine water. A brown colortion confirms the...
help!! need tk balance the metals nickel(II), iron(III), manganese(II), and aluminum!! due in 20 minutes 4....
help!! need tk balance the metals nickel(II), iron(III),
manganese(II), and aluminum!! due in 20 minutes
4. Add 12 drops of water and 2 drops of 12 M hydrochloric acid and stir thoroughly for about a minute. Centrifuge and decant the solution immediately. Save the solution for Step 6. 5. Wash the precipitate from Step 4 with water and discard the washing. Add 5 drops of 6 M hydrochloric acid and 1 drop of 6M nitric acid. Heat in a water...
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...
please help with equilibrium reaction and what happens to the OH ions in the solution PART...
please help with equilibrium reaction and what happens to the OH
ions in the solution
PART ASSOCIATION/DISSOCIATION OF A PRECIPITATE Data Collection 1. Get a clean test tube and place -1 mL (20-25 drops) of NaOH solution in the tube. 2. Slowly add drops of CaCl, solution until you notice a precipitate form in the tube. 3. Write a net ionic reaction for the formation of the precipitate below as an equilib- rium reaction: -NaOH ans + CaClzrag NaCl +...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name of any) Lab Section MWITH THE Advance Study Assignment 1. The reagent (chemical substance used) to precipitate the all the cations of Group _(symbol and molarity 2. Why do we add an additional drop of the precipitating to the Group I precipitate formed? 3. When we centrifuge why must we use a blank test tube (containing an equal volume of water) on the opposite...
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample should be identified first if it is indeed in the sample? 2. In what phase is the first cation supposed to be identified, in solid or liquid phase? And in what color? 3. According to the experimental procedure written above which cation in your sample should be identified second if it is indeed in the sample? 4. In what phase is the second cation...
post lab questions?
2. The instructions for Solution IV describe the preparation of a buffer solution. a. Calculate the pH of this buffer solution if it has an equal concentration of NHs and NH4 b. Does this solution buffer in the acidic, basic, or nearly neutral pH range? Explain. c. Explain why it is necessary to provide a buffer solution at this point in the procedure. Solution IV Add 2 drops NH.CI solution and check the pH of the solution...
1. Write net ionic equations for ALL precipitation reactions of each anion studied in this e with Ag'(aq) and Ba (a), respectively, (in the absence of HNO,) at Bad 2 ptt disalve 51 과 IND Add about 10 drops of deionized water and 10 drops of 6 MNH, to the precipitate and mix thoroughly. Note that the Agl precipitate will persist; Agl is not soluble in NHs solution Confirmation Test for lodide Carry out confirmatory test for iodide as follow:...
Question:
Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should be performed concurrently on the known and the unknown solutions. Volumes are approximate. All work excepting the centrifugation should be done in the fume hood 1. To about 2. mL of your sample in a test tube, add 5 drops (-0.2 mL) of 6 M HCl(a). Mix well and centrifuge. Decant the clear liquid into a clean test tube and save it for Step...
What is the chemical reaction taking place here? I thought it
was Zn(CN)2 but it is not a denim blue.
The Soluble Hydroxide Group: Analyze the Solution for the Presence of Znº and All 25. To test for All, add 10 drops of 6 M HNO, solution to Test Tube 5. Check the pH of the solution. If it is not acidic, add more 6 M HNO, dropwise until the solution becomes acidic. Add 6 M NH, solution dropwise until...
Write balanced net ionic equations for each anion experiment (B
through F)
B. IODIDE (I) 13. Place five drops of your anion solution in a test tube. Add five drops of 6 M HC,H,O, followed by two drops of 0.2 M KNO, A reddish-brown color confirms the presence of I (in I2). Record your results. С.BROMIDE (Br.) Place five drops of your anion solution in a test tube and add five drops of chlorine water. A brown colortion confirms the...
help!! need tk balance the metals nickel(II), iron(III),
manganese(II), and aluminum!! due in 20 minutes
4. Add 12 drops of water and 2 drops of 12 M hydrochloric acid and stir thoroughly for about a minute. Centrifuge and decant the solution immediately. Save the solution for Step 6. 5. Wash the precipitate from Step 4 with water and discard the washing. Add 5 drops of 6 M hydrochloric acid and 1 drop of 6M nitric acid. Heat in a water...
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...
please help with equilibrium reaction and what happens to the OH
ions in the solution
PART ASSOCIATION/DISSOCIATION OF A PRECIPITATE Data Collection 1. Get a clean test tube and place -1 mL (20-25 drops) of NaOH solution in the tube. 2. Slowly add drops of CaCl, solution until you notice a precipitate form in the tube. 3. Write a net ionic reaction for the formation of the precipitate below as an equilib- rium reaction: -NaOH ans + CaClzrag NaCl +...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name of any) Lab Section MWITH THE Advance Study Assignment 1. The reagent (chemical substance used) to precipitate the all the cations of Group _(symbol and molarity 2. Why do we add an additional drop of the precipitating to the Group I precipitate formed? 3. When we centrifuge why must we use a blank test tube (containing an equal volume of water) on the opposite...
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