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An Unknown Hydrocarbon Shows a Parent Peak on Its Mass δ \delta

Question 46

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An unknown hydrocarbon shows a parent peak on its mass spectra at m/z 86.There is no evidence of absorptions from visible or uv spectra.The IR shows no major absorptions outside the C-H stretch and bending vibrations.The 1H NMR reveals a singlet at δ \delta 0.9 (9H) , a triplet at δ \delta 0.98 (3H) , and a quartet at δ \delta 1.6 (2H) .


A) An unknown hydrocarbon shows a parent peak on its mass spectra at m/z 86.There is no evidence of absorptions from visible or uv spectra.The IR shows no major absorptions outside the C-H stretch and bending vibrations.The <sup>1</sup>H NMR reveals a singlet at \delta 0.9 (9H) , a triplet at \delta 0.98 (3H) , and a quartet at \delta 1.6 (2H) . A) B) C) D) E)
B) An unknown hydrocarbon shows a parent peak on its mass spectra at m/z 86.There is no evidence of absorptions from visible or uv spectra.The IR shows no major absorptions outside the C-H stretch and bending vibrations.The <sup>1</sup>H NMR reveals a singlet at \delta 0.9 (9H) , a triplet at \delta 0.98 (3H) , and a quartet at \delta 1.6 (2H) . A) B) C) D) E)
C) An unknown hydrocarbon shows a parent peak on its mass spectra at m/z 86.There is no evidence of absorptions from visible or uv spectra.The IR shows no major absorptions outside the C-H stretch and bending vibrations.The <sup>1</sup>H NMR reveals a singlet at \delta 0.9 (9H) , a triplet at \delta 0.98 (3H) , and a quartet at \delta 1.6 (2H) . A) B) C) D) E)
D) An unknown hydrocarbon shows a parent peak on its mass spectra at m/z 86.There is no evidence of absorptions from visible or uv spectra.The IR shows no major absorptions outside the C-H stretch and bending vibrations.The <sup>1</sup>H NMR reveals a singlet at \delta 0.9 (9H) , a triplet at \delta 0.98 (3H) , and a quartet at \delta 1.6 (2H) . A) B) C) D) E)
E) An unknown hydrocarbon shows a parent peak on its mass spectra at m/z 86.There is no evidence of absorptions from visible or uv spectra.The IR shows no major absorptions outside the C-H stretch and bending vibrations.The <sup>1</sup>H NMR reveals a singlet at \delta 0.9 (9H) , a triplet at \delta 0.98 (3H) , and a quartet at \delta 1.6 (2H) . A) B) C) D) E)

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