Use the given results to identify possible cations for A to D. Provide a complete justification of your decision. If there is not enough information to reach a definitive conclusion regarding the identity of any unknown, suggest other possible tests, and their expected results, which could be used to identify it. Use table 9.2 p 414 in your text to assist with answering this question A mixture of amino acids containing phenylalanine, cysteine and aspartic acid was separated using both chromatography and electrophoresis. The results of the two processes were compared. Compare the two separation processes. How does each process achieve separation of the molecules? Predict the results of each process by drawing a chromatogram and an electrophoresis gel. Explain, using the structures of the amino acids, why the results are as you have predicted. The results electrophoresis of proteins in blood of several individuals of one family are shown in the photograph. The columns M, C, C and F are drawn from Mum, dad and two children. The two right hand columns is a second woman’s blood and her child’s as the far right. She claims that the man is the father to her child. Systematically analyse the evidence to reach a conclusion and fully justify your response. A grazier found that animals were dying after being placed in one of his paddocks. Nearby there had been a garbage dump. He reasoned that organic substances and other toxic materials may have leached into the ground water and flowed into his property. Animals eating plants using this water might be the cause. Laboratory analysis of water and soil sample revealed the results below the flow chart. One set of tests was used to identify possible organic contaminants. Bubbles formed on reaction with sodium Green on addition of acidified dichromate solution Brick-red on heating added Benedict’s solution Reaction to bromine RESULTS Which organic group or groups is/are present? Clearly explain your reasoning.(IP)
Use the given results to identify possible cations for A to D. Provide a complete justification of your decision. If there is not enough information to reach a definitive conclusion regarding the identity of any unknown, suggest other possible tests, and their expected results, which could be used to identify it. Use table 9.2 p 414 in your text to assist with answering this question A mixture of amino acids containing phenylalanine, cysteine and aspartic acid was separated using both chromatography and electrophoresis. The results of the two processes were compared. Compare the two separation processes. How does each process achieve separation of the molecules? Predict the results of each process by drawing a chromatogram and an electrophoresis gel. Explain, using the structures of the amino acids, why the results are as you have predicted. The results electrophoresis of proteins in blood of several individuals of one family are shown in the photograph. The columns M, C, C and F are drawn from Mum, dad and two children. The two right hand columns is a second woman’s blood and her child’s as the far right. She claims that the man is the father to her child. Systematically analyse the evidence to reach a conclusion and fully justify your response. A grazier found that animals were dying after being placed in one of his paddocks. Nearby there had been a garbage dump. He reasoned that organic substances and other toxic materials may have leached into the ground water and flowed into his property. Animals eating plants using this water might be the cause. Laboratory analysis of water and soil sample revealed the results below the flow chart. One set of tests was used to identify possible organic contaminants. RESULTS Bubbles formed on reaction with sodium Green on addition of acidified dichromate solution Brick-red on heating added Benedict’s solution Reaction to bromine Which organic group or groups is/are present? Clearly explain your reasoning.(IP)
ExamRevision.docx