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QUESTION 1 10 points Save Answer be Treatment of an unknown solution containing Group III cations...
48 Group III Cations Scheme Fo”, Ni, Cr", Alto 3% H2O2 (Step 3) 6M NaOH (Step...
48 Group III Cations Scheme Fo”, Ni, Cr", Alto 3% H2O2 (Step 3) 6M NaOH (Step 4) Heat (Step 5) Fe(OH). (brown solid) NI(OH) (green solid) (Black solid, Step 6) Croi (Al(OH) (Yellow solution, Step 6) 1 15M HNO, (Step 7) 1M NHACI (Step 8) 15M NH,OHNH, (Step 9)/Spin (Step 10) 15M HNO, (Step 14) GM NH,OHNH, (Step 15) Fe(OH) (Brown solid Step 10) INIINHA (Blue solution Step 10) Al(OH) White gel Step 16) Cro. (Yellow solution Step 16) 1...
Ex: Separation of Group 1 Cations (Pb+ and Ag+) 10 drops of unknown was place along...
Ex: Separation of Group 1 Cations (Pb+ and Ag+) 10 drops of unknown was place along with 6 drops of 6M HCl, centrifuge. 2 more drops of 6M HCl, centrifuge. Decant supernate, use precipitate and add 5 drops of cold water, centrifuge. Test for Pb2+ 15 drops of water to precipitate & put in hot water, centrifuge then decant supernate. repeat x2 Combine supernates and save precipitate for Ag+ analysis. Add 3 drops of 1M K2CrO4 to supernate. yellow precipitate...
Question 10 of 40 Question 10 2.5 points Save Answer 18.71 ml of an aqueous aluminum...
Question 10 of 40 Question 10 2.5 points Save Answer 18.71 ml of an aqueous aluminum nitrate, Al(NO3)3 , solution is applied to the top of a column filled with a cation exchange resin in the protonated form. The column is then rinsed out and the nitric acid generated by the exchange of aluminum ions for protons is collected. It is found 43.42 ml of 0.2147 M NaOH is needed to titrate the acid. Calculate the mols of nitric acid...
QUESTION 18 1 points Save Answer Will a precipitate form when 20.0 mL of 1.8 x...
QUESTION 18 1 points Save Answer Will a precipitate form when 20.0 mL of 1.8 x 10-3 M Pb(NO3)2 is added to 30.0 mL of 5.0 x 10-4 M Na2SO4? The Ksp of (PbSO4) is 6.3 x 10-7. OA. yes, because the ion product > Ksp OB. no, because the ion product< OC.no, because the ion product > Ksp OD. 'yes, because the ion product < Ksp Ksp ОЕ. no, because Ksp is less than the ion product
Need answers 8-11 QUESTION 8 1 points Save Ans At 1.0 atm, an unknown pure gas...
Need answers 8-11
QUESTION 8 1 points Save Ans At 1.0 atm, an unknown pure gas leaks through a small opening in a sealed container at a rate 3.54 times slower than a sample of pure nitrogen gas. Which of the following formulas is likely to represent the formula of the unknown gas? O a. C4H10 b. NH3 Oc. UFG O d. SF5 QUESTION 9 1 points Save Answer Aluminum metal shavings (10.0 g) are placed in 100 mL of...
Specific which reagent will produce the indicated alcohol from 3-methylbut-1-ene. QUESTION 1 10 points Save Answer...
Specific which reagent will produce the indicated alcohol from
3-methylbut-1-ene.
QUESTION 1 10 points Save Answer Match the reagent to the specified outcome ??? 3-methylbut-1-ene OH 1. BH; THF 2. NaOH, H2O2 . Not possible in one step 3-methylbutan-2-ol H2SO4, H2O Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save All Answers Save and Submit Save and Submit 3-methylbutan-2-ol H2SO4, H20 OH 1. Hg(OAc)2, H20 3-methylbutan-1-ol 2. NaBH4 HO...
10 points Save Answer QUESTION 3 You have the same unknown compound in 2 test tubes....
10 points Save Answer QUESTION 3 You have the same unknown compound in 2 test tubes. You add bromine to both, and keep one in the light and one in the dark? Both samples become colorless. What do you have? alkyne alkene alkane benzene Save All Answers Save and Submit Click Save and Submit to save and submit. Click Save All Answers to sve oll ansoerss MacBook Pro & 7 5 6 P T K D G J н O...
I concluded that my unknown was Pb2+. since yellow precipitate formed. can you help me answer...
I concluded that my unknown was Pb2+. since yellow
precipitate formed. can you help me answer the questions for the
Known and unknown report
Qualitative Analysis: Group I Cations 10 ORECTIVES A Leam some chemistry of Group I cations, R Analyze an unknown for Group I cations. THEORY AND DISCUSSION Group I cations are precipitated as insoluble chlorides: Ag, Pb, Hg2 +Cr-AgCl, PbCh, HgCla The colors of the following species will be helpful in the analysis for Group I cations....
all of them please QUESTION 1 1 points Save Answer Which of the following can have...
all of them please
QUESTION 1 1 points Save Answer Which of the following can have cis/trans isomers? Draw their isomers. CH3CH2CH=CH2 (CH3CH2)2CCHCH3 CH3CH2CH=CHCH3 CH2=CH2 QUESTION 2 1 points Save Answer Name the following compounds, with cis/trans nomenclature. trans-4-methyl-2-hexene trans-4-thyl-2-pentane O cis-4-thyl-2-pentane O cis-4-methyl-2-hexene QUESTION 3 1 points Save Answer Name the following compounds, with cis/trans nomenclature Br Br Otrsans-2,5-dibromo-3-hexene trans-1,4-dibromo-2-butane O cis-1,4-dibromo-2-butane cis 2,5-dibromo-3-hexene Click Save and Submit to see and submit Click Save All Answers to save all...
QUESTION 7 2 points Save Answer After the first trial, in order to maximize the titration...
QUESTION 7 2 points Save Answer After the first trial, in order to maximize the titration precision, the sample size of pure KHC8H404 or unknown for a trial should be adjusted so 20-23 mL of NaOH are delivered in both part B and C. This can be done as noted in your lab manual. 115,81 ml NaOH was used in the titration of a 0.397 sample use ratios to determine mass of sample needed to use 22.00 mL of NaOH...
48 Group III Cations Scheme Fo”, Ni, Cr", Alto 3% H2O2 (Step 3) 6M NaOH (Step 4) Heat (Step 5) Fe(OH). (brown solid) NI(OH) (green solid) (Black solid, Step 6) Croi (Al(OH) (Yellow solution, Step 6) 1 15M HNO, (Step 7) 1M NHACI (Step 8) 15M NH,OHNH, (Step 9)/Spin (Step 10) 15M HNO, (Step 14) GM NH,OHNH, (Step 15) Fe(OH) (Brown solid Step 10) INIINHA (Blue solution Step 10) Al(OH) White gel Step 16) Cro. (Yellow solution Step 16) 1...
Question 10 of 40 Question 10 2.5 points Save Answer 18.71 ml of an aqueous aluminum nitrate, Al(NO3)3 , solution is applied to the top of a column filled with a cation exchange resin in the protonated form. The column is then rinsed out and the nitric acid generated by the exchange of aluminum ions for protons is collected. It is found 43.42 ml of 0.2147 M NaOH is needed to titrate the acid. Calculate the mols of nitric acid...
QUESTION 18 1 points Save Answer Will a precipitate form when 20.0 mL of 1.8 x 10-3 M Pb(NO3)2 is added to 30.0 mL of 5.0 x 10-4 M Na2SO4? The Ksp of (PbSO4) is 6.3 x 10-7. OA. yes, because the ion product > Ksp OB. no, because the ion product< OC.no, because the ion product > Ksp OD. 'yes, because the ion product < Ksp Ksp ОЕ. no, because Ksp is less than the ion product
Need answers 8-11
QUESTION 8 1 points Save Ans At 1.0 atm, an unknown pure gas leaks through a small opening in a sealed container at a rate 3.54 times slower than a sample of pure nitrogen gas. Which of the following formulas is likely to represent the formula of the unknown gas? O a. C4H10 b. NH3 Oc. UFG O d. SF5 QUESTION 9 1 points Save Answer Aluminum metal shavings (10.0 g) are placed in 100 mL of...
Specific which reagent will produce the indicated alcohol from
3-methylbut-1-ene.
QUESTION 1 10 points Save Answer Match the reagent to the specified outcome ??? 3-methylbut-1-ene OH 1. BH; THF 2. NaOH, H2O2 . Not possible in one step 3-methylbutan-2-ol H2SO4, H2O Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save All Answers Save and Submit Save and Submit 3-methylbutan-2-ol H2SO4, H20 OH 1. Hg(OAc)2, H20 3-methylbutan-1-ol 2. NaBH4 HO...
10 points Save Answer QUESTION 3 You have the same unknown compound in 2 test tubes. You add bromine to both, and keep one in the light and one in the dark? Both samples become colorless. What do you have? alkyne alkene alkane benzene Save All Answers Save and Submit Click Save and Submit to save and submit. Click Save All Answers to sve oll ansoerss MacBook Pro & 7 5 6 P T K D G J н O...
I concluded that my unknown was Pb2+. since yellow
precipitate formed. can you help me answer the questions for the
Known and unknown report
Qualitative Analysis: Group I Cations 10 ORECTIVES A Leam some chemistry of Group I cations, R Analyze an unknown for Group I cations. THEORY AND DISCUSSION Group I cations are precipitated as insoluble chlorides: Ag, Pb, Hg2 +Cr-AgCl, PbCh, HgCla The colors of the following species will be helpful in the analysis for Group I cations....
all of them please
QUESTION 1 1 points Save Answer Which of the following can have cis/trans isomers? Draw their isomers. CH3CH2CH=CH2 (CH3CH2)2CCHCH3 CH3CH2CH=CHCH3 CH2=CH2 QUESTION 2 1 points Save Answer Name the following compounds, with cis/trans nomenclature. trans-4-methyl-2-hexene trans-4-thyl-2-pentane O cis-4-thyl-2-pentane O cis-4-methyl-2-hexene QUESTION 3 1 points Save Answer Name the following compounds, with cis/trans nomenclature Br Br Otrsans-2,5-dibromo-3-hexene trans-1,4-dibromo-2-butane O cis-1,4-dibromo-2-butane cis 2,5-dibromo-3-hexene Click Save and Submit to see and submit Click Save All Answers to save all...
QUESTION 7 2 points Save Answer After the first trial, in order to maximize the titration precision, the sample size of pure KHC8H404 or unknown for a trial should be adjusted so 20-23 mL of NaOH are delivered in both part B and C. This can be done as noted in your lab manual. 115,81 ml NaOH was used in the titration of a 0.397 sample use ratios to determine mass of sample needed to use 22.00 mL of NaOH...
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