Homework Answers
Balanced equation :
3 K+(aq) +
[Co(NO2)6]3-(aq, yellow) 
K3Co(NO2)6(s, yellow)
Coefficients 1 are not mentioned , these are default values .
Or
3 K+(aq) + 1
[Co(NO2)6]3-(aq, yellow)
1 K3Co(NO2)6(s, yellow)
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Identifying the Group E ion potassium The supernatant liquid remaining after the copper (11) hydroxide separation...
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Oxalate ion will interfere with the Group D tests after we make the solution acidic. Also, ammonium ion may prevent the precipitation of Group Dcations as hydroxides in sodium hydroxide solution. Thus, must treat the supernatant liquid left after we have precipitated calcium oxalate, in order to destroy any remaining Oxalate or ammonium ions prior to further analysis. To accomplish this, we transfer the solution to a crucible, add concentrated nitric acid and heat the mixture to dryness in a...
We separate the iron hydroxide ppt from the supernatant liquid containing the aluminum complex ion by...
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A1 liter solution contains 0.350 M acetic acid and 0.263 M potassium acetate Addition of 0.289...
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Why wouldnt a weak base, such as NH3, work just as well as KOH in (1)?...
Why wouldnt a weak base, such as NH3, work just as well as KOH
in (1)?
2.2 Is the question I have. I figured out
2.1 already.
Below is relevant info. Thanks!
2. (1) Describe how adding a solution of KOH to the original sulfide precipitate results in the separa- tion of Sn4+ ion from the other Group W cations. (2) Why wouldn't a weak base, such as aque- ous NH3, work just as well as aqueous KOH in (1)?...
Question: Procedure Separation and Identification of Pb2 (aq), Fe (aq), Al(a), and Cu Note: Tests should...
Question:
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A 1.00 liter solution contains 0.35M acetic acid and 0.26 M potassium acetate. If 35.0 mL...
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Lab Section: 1 Prelab: Inorganic Group I Ions 1. On the report sheet, complete the flow...
Lab Section: 1 Prelab: Inorganic Group I Ions 1. On the report sheet, complete the flow diagram for the separation and identification of the ions in Group I 2. Write balanced net ionic equations for the following reactions: The precipitation of the chloride of Pb a. in Step 1. The formation of a yellow precipitate in Step 4. b. The formation of a complex ion in Step 5. c. d. The reaction that forms a white precipitate in Step 5....
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...
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...
Oxalate ion will interfere with the Group D tests after we make the solution acidic. Also, ammonium ion may prevent the precipitation of Group Dcations as hydroxides in sodium hydroxide solution. Thus, must treat the supernatant liquid left after we have precipitated calcium oxalate, in order to destroy any remaining Oxalate or ammonium ions prior to further analysis. To accomplish this, we transfer the solution to a crucible, add concentrated nitric acid and heat the mixture to dryness in a...
We separate the iron hydroxide ppt from the supernatant liquid containing the aluminum complex ion by centrifuging the reaction mixture and decanting the supernatant liquid. We verify the presence of iron ion in the hydroxide ppt by dissolving the iron (I) hydroxide in a minimal amount of aqueous HC forming yellow [FeCla] Write the reaction described above including phases Adding yellow potassium ferrocyanide solution, KaFe(CN)s, causing formation of a solid dark blue dye, iron () hexacyanoferrate (), Fea[Fe(CN)s]3, known as...
Aluminum ion in solution reacts with water to form aqueous hexaaguaaluminum ()ion. Write this reaction below, remember phases. Aluminum is more likely to form a hydrated complex than the other four ions remaining in solution, because of its relatively small size and high charge To separate the Group B2 ion, the solution first is made basic by adding ammonia. In the presence of this weak base the pH is adjusted to 9-10 and the group B ions form insoluble hydroxides....
A1 liter solution contains 0.350 M acetic acid and 0.263 M potassium acetate Addition of 0.289 moles of hydrobromic acid will: (Assume that the volume does not change upon the addition of hydrobromic acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units |Lower the pH by several units |Not change the pH Exceed the buffer capacity Submit Answer Retry Entire Group 9 more group attempts remaining A 1 liter solution contains 0.443 M hypochlorous...
Why wouldnt a weak base, such as NH3, work just as well as KOH
in (1)?
2.2 Is the question I have. I figured out
2.1 already.
Below is relevant info. Thanks!
2. (1) Describe how adding a solution of KOH to the original sulfide precipitate results in the separa- tion of Sn4+ ion from the other Group W cations. (2) Why wouldn't a weak base, such as aque- ous NH3, work just as well as aqueous KOH in (1)?...
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...
A 1.00 liter solution contains 0.35M acetic acid and 0.26 M potassium acetate. If 35.0 mL of water are added to this system, indicate whether the following statements are true or false. (Note the the volume MUST CHANGE upon the addition of water) A. The concentration of CH3COOH will decrease. True False B. The concentration of CH3COO" will remain the same C. The equilibrium concentration of H30* will increase D. The pH will increase E. The ratio of [CH3COOH]/ [CH3coo]...
Lab Section: 1 Prelab: Inorganic Group I Ions 1. On the report sheet, complete the flow diagram for the separation and identification of the ions in Group I 2. Write balanced net ionic equations for the following reactions: The precipitation of the chloride of Pb a. in Step 1. The formation of a yellow precipitate in Step 4. b. The formation of a complex ion in Step 5. c. d. The reaction that forms a white precipitate in Step 5....
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...
help!! need tk balance the metals nickel(II), iron(III),
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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...
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