Which of the following is used as an 1 I. internal standard in in 1H-NMR spectroscopy? O Tetramethysilane O Trimethylsilane Phosphorus trichloride O Phosphorus pentachloride O O

Q: ff 15 13 11 76 4. in ppm) -12

A: NMR spectrum analysis

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A: (a)

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A:

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A:

Q: Why do the following isotopes give strong signals in NMR spectroscopy: 1H, 19F and 31P?

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Q: Q. Write fragments in mass spectroscopy of CH3- O-CH2-CH2-CI , m/z 14, 15, 27 ,28 ,45 ,63 ,77 ,94.…

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A:

Q: Which of the following molecules matches the given data? HDI = 5 IR (cm1 ): 1724 (strong), 1604…

A: This is compound 2

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A: The answer is given as follows

Q: MS: m/z: 102.1 (100.0%) and m/z =103.1 (6.5%) IR (cm-1): 3000-3300 (strong, broad), 2950; 1150…

A:

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A:

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Q: 0.8 I d 0.6 0.4 0.2 T 40 60 80 100 120 140 160 180 200 220

A: Given that, Molecular formula = C7H5BrO3 Molar mass of compound = 217 g/mol Important peaks : (m/z)…

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Q: 100 MS-NU-0661 80 60 40 20 10 20 30 40 50 60 70 80 90 100 m/z Relative Intensity

A:

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Q: 2815 ex pesto d p NmR specba Doad and explain the

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Q: How could 13C NMR spectroscopy be used to distinguish among isomers X, Y, and Z?

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A: