Chemistry A-Level
Change in dipole moment
What Change in dipole moment means in Chemistry A-Level, as defined for OCR.
Definition of Change in dipole moment
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Reference: OCR
A bond must change its dipole during the vibration to absorb infrared strongly, so symmetric stretches of symmetrical molecules absorb weakly.
Topics that use Change in dipole moment
- Analytical techniques (OCR A-Level)
Related terms
- Absorption and re-emission of infrared radiation
- Absorption of infrared radiation
- Absorption of infrared radiation by bond vibrations
- Bond stretching and bending
- Broad peak shape caused by hydrogen bonding
- Changes to energy usage
- characteristic absorption bands
- Characteristic absorptions of common organic bonds
Using Change in dipole moment in the exam
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