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Ethyne (HC CH) Does Not Show IR Absorption in the Region

Question 36

Multiple Choice

Ethyne (HC Ethyne (HC CH) does not show IR absorption in the region 2000-2500 cm<sup>-1</sup> because ________. A) C-H stretches occur at lower energies B) C C stretches occur at about 1640 cm<sup>-1</sup> C) there is no change in the dipole moment when the C C bond in ethyne stretches D) there is a change in the dipole moment when the C C bond in ethyne stretches CH) does not show IR absorption in the region 2000-2500 cm-1 because ________.


A) C-H stretches occur at lower energies
B) C Ethyne (HC CH) does not show IR absorption in the region 2000-2500 cm<sup>-1</sup> because ________. A) C-H stretches occur at lower energies B) C C stretches occur at about 1640 cm<sup>-1</sup> C) there is no change in the dipole moment when the C C bond in ethyne stretches D) there is a change in the dipole moment when the C C bond in ethyne stretches C stretches occur at about 1640 cm-1
C) there is no change in the dipole moment when the C Ethyne (HC CH) does not show IR absorption in the region 2000-2500 cm<sup>-1</sup> because ________. A) C-H stretches occur at lower energies B) C C stretches occur at about 1640 cm<sup>-1</sup> C) there is no change in the dipole moment when the C C bond in ethyne stretches D) there is a change in the dipole moment when the C C bond in ethyne stretches C bond in ethyne stretches
D) there is a change in the dipole moment when the C Ethyne (HC CH) does not show IR absorption in the region 2000-2500 cm<sup>-1</sup> because ________. A) C-H stretches occur at lower energies B) C C stretches occur at about 1640 cm<sup>-1</sup> C) there is no change in the dipole moment when the C C bond in ethyne stretches D) there is a change in the dipole moment when the C C bond in ethyne stretches C bond in ethyne stretches

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