If a white ppt is obtained upon adding BaCl2 reagent or a neutral unknown solution, what...
If a white ppt is obtained upon adding BaCl2 reagent or a neutral unknown solution, what might the ppt be? Write formulas for as many possible substances as possible considering both positive and negative ions.
Homework Answers
The precipitate formed would contain either barium ion or chloride ion.
Insoluble salts of barium ion, Ba2+ are
barium sulfate, BaSO4 (white precipitate)
bariuum phosphate, Ba3(PO4)2 (white precipitate)
barium carbonate, .BaCO3 (white precipitate)
barium oxalate, BaC2O4 (white precipitate)
Insoluble salts containing chloride ions are:
silver(I) chloride, AgCl2 (white precipitate)
mercury(I) chloride, Hg2Cl2 (white precipitate)
lead(II) chloride, PbCl2 .(white precipitate)
Add Answer to:
If a white ppt is obtained upon adding BaCl2 reagent
or a neutral unknown solution, what...
UNKNOWN SOLUTION Be sure to indicate solution (soln) or precipitate (ppt) Group 3 Reagent Cation(s) present...
UNKNOWN SOLUTION Be sure to indicate solution (soln) or precipitate (ppt) Group 3 Reagent Cation(s) present Group Procedure reference G3-1 (ex: G1-6) Observations and net lonic equations If additional space is needed, reference the Group Procedure Black PPT Felt NH,ỰNH. Thioacetamide (TA), G3-2 6 M HCI Heat Fert G3-3 6 MNH, Once HCI coas added to ppt, puff of smoke came, ppt remained black colorless ppt , 10 drops to make soluty basic to litmus paper I once added to...
- You have a clear colorless unknown solution with a group 1 cation. After adding some...
- You have a clear colorless unknown solution with a group 1 cation. After adding some hydrochloric acid solution you obtain a white precipitate. Addition of ammonia causes the white precipitate to dissolve. Acidifying with nitric acid makes the precipitate reappear. Which cation do you suggest was in the unknown sample? Write the net ionic equation of any reaction that may occur (4P). 3. When testing for the presence of sulfate, what reagent is added to the solution? What final...
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...
5. Why does benzene float on water? 6. What is the meaning of a boiling point?...
5. Why does benzene float on water? 6. What is the meaning of a boiling point? Provide a scientific definition. 7. What does anion mean? 8. The insoluble compound (the white ppt) resulted from testing for SO4-2 ion is ------------------------- 9. The gas bubbles that are produced when adding HCl to a solution that contains CO3-2 represents the formation of ______________. 10. When a solution of Cl- ion is mixed with a solution of AgNO3 (in acidic environment), what is...
What are the ions present in each row? What are the ions present in the unknown...
What are the ions present in each row?
What are the ions present in the unknown solution?
Name DATA & CALCULATIONS Test Solution Reagent Added Chemical Fouatio Chemical Equation KSCN Reaction? Observations (Y/N) Timmediaty turns a brown color TY it turns a lighter I color yourow lit turnis a darker vor color verlow Sadove Y HG Fe(NO), terly Na,so, Na.Soy KSCN Stays near Ba(NO), HCI I stays clear Na,so, tums white. 16221 Ba(NO), + Na,so, NaC,H,O, contiwves to stay write...
1. If a solution of hydrochloric acid is added to a solution of sodium carbonate, what...
1. If a solution of hydrochloric acid is added to a solution of sodium carbonate, what is observed? Write the net ionic equation of any reaction that may occur (4P). 2. You have a clear colorless unknown solution with a group I cation. After adding some hydrochloric acid solution you obtain a white precipitate. Addition of ammonia causes the white precipitate to dissolve. Acidifying with nitric acid makes the precipitate reappear. Which cation do you suggest was in the unknown...
culate the molarity (M) of an unknown solution of hydrochlorie acid (HCT). This experiment similar to the one as done in the lab session.. The acid solution was titrated in a flask with a solutio...
culate the molarity (M) of an unknown solution of hydrochlorie acid (HCT). This experiment similar to the one as done in the lab session.. The acid solution was titrated in a flask with a solution of NaOH added from the buret until the end point (light pink color in the flask) was seen. Followings are the data measured by a student. (3 points) Molarity (M) of NaOH (given) Volume of acid ( measured) in the flask Volume of NaOH required...
A student attempted to identify an unknown compound by the method used in this experiment. Her or...
A student attempted to identify an unknown compound by the method used in this experiment. Her original sample weight was 0.7047 g. When heated in the first step, the mass decreased to 0.4862 g Write the complete, net balanced reaction that would occur in this experiment if - the student's unknown compound was NaHCO3 -the student's unknown compound was KHCO3 Using stoichiometry, predict the theoretical yield of the solid chloride obtained at the end of the student's experiment if -...
QUESTIONS: Expt. 21 Name: Silver nitrate is added to solution containing an unknown salt. An off-white...
QUESTIONS: Expt. 21 Name: Silver nitrate is added to solution containing an unknown salt. An off-white colored precipitate Torms Nitric acid is added to the mixture the precipitate dissolves and gas is given off Analyze this data and determine the anion present a CH b. Br d POS- e. CO 2 A dark glass bottle of chemicals is found in cleaning out an old basement Part of the label has been eaten away with age. Only the last part of...
1. If your original unknown is colorless, what ions are absent from your unknown? 2. If...
1. If your original unknown is colorless, what ions are absent
from your unknown?
2. If you get no precipitate with just the 6 M NH3 in step B,
what ions are absent from your unknown?
pls help are my answers correct ty
17 Page 4 Aperiment 24. Qualitative Analysis Group III-NI, Mn, Fe, Al, Cr, Zn 1. PROCEDURES A. Observations of Samples. Obtain an unknown and record code. Observe color of unknown solution Common color correlations are: dark blue...
UNKNOWN SOLUTION Be sure to indicate solution (soln) or precipitate (ppt) Group 3 Reagent Cation(s) present Group Procedure reference G3-1 (ex: G1-6) Observations and net lonic equations If additional space is needed, reference the Group Procedure Black PPT Felt NH,ỰNH. Thioacetamide (TA), G3-2 6 M HCI Heat Fert G3-3 6 MNH, Once HCI coas added to ppt, puff of smoke came, ppt remained black colorless ppt , 10 drops to make soluty basic to litmus paper I once added to...
- You have a clear colorless unknown solution with a group 1 cation. After adding some hydrochloric acid solution you obtain a white precipitate. Addition of ammonia causes the white precipitate to dissolve. Acidifying with nitric acid makes the precipitate reappear. Which cation do you suggest was in the unknown sample? Write the net ionic equation of any reaction that may occur (4P). 3. When testing for the presence of sulfate, what reagent is added to the solution? What final...
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...
What are the ions present in each row?
What are the ions present in the unknown solution?
Name DATA & CALCULATIONS Test Solution Reagent Added Chemical Fouatio Chemical Equation KSCN Reaction? Observations (Y/N) Timmediaty turns a brown color TY it turns a lighter I color yourow lit turnis a darker vor color verlow Sadove Y HG Fe(NO), terly Na,so, Na.Soy KSCN Stays near Ba(NO), HCI I stays clear Na,so, tums white. 16221 Ba(NO), + Na,so, NaC,H,O, contiwves to stay write...
1. If a solution of hydrochloric acid is added to a solution of sodium carbonate, what is observed? Write the net ionic equation of any reaction that may occur (4P). 2. You have a clear colorless unknown solution with a group I cation. After adding some hydrochloric acid solution you obtain a white precipitate. Addition of ammonia causes the white precipitate to dissolve. Acidifying with nitric acid makes the precipitate reappear. Which cation do you suggest was in the unknown...
culate the molarity (M) of an unknown solution of hydrochlorie acid (HCT). This experiment similar to the one as done in the lab session.. The acid solution was titrated in a flask with a solution of NaOH added from the buret until the end point (light pink color in the flask) was seen. Followings are the data measured by a student. (3 points) Molarity (M) of NaOH (given) Volume of acid ( measured) in the flask Volume of NaOH required...
A student attempted to identify an unknown compound by the method used in this experiment. Her original sample weight was 0.7047 g. When heated in the first step, the mass decreased to 0.4862 g Write the complete, net balanced reaction that would occur in this experiment if - the student's unknown compound was NaHCO3 -the student's unknown compound was KHCO3 Using stoichiometry, predict the theoretical yield of the solid chloride obtained at the end of the student's experiment if -...
QUESTIONS: Expt. 21 Name: Silver nitrate is added to solution containing an unknown salt. An off-white colored precipitate Torms Nitric acid is added to the mixture the precipitate dissolves and gas is given off Analyze this data and determine the anion present a CH b. Br d POS- e. CO 2 A dark glass bottle of chemicals is found in cleaning out an old basement Part of the label has been eaten away with age. Only the last part of...
1. If your original unknown is colorless, what ions are absent
from your unknown?
2. If you get no precipitate with just the 6 M NH3 in step B,
what ions are absent from your unknown?
pls help are my answers correct ty
17 Page 4 Aperiment 24. Qualitative Analysis Group III-NI, Mn, Fe, Al, Cr, Zn 1. PROCEDURES A. Observations of Samples. Obtain an unknown and record code. Observe color of unknown solution Common color correlations are: dark blue...
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