What is the principle behind using UV-Vis spectroscopy for qualitative analysis?
Practice Questions
1 question
Q1
What is the principle behind using UV-Vis spectroscopy for qualitative analysis?
It measures the mass of ions
It detects the color of the solution
It identifies functional groups based on absorbance
It separates ions based on charge
UV-Vis spectroscopy identifies compounds by measuring the absorbance of light at specific wavelengths, which correlates with functional groups.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the principle behind using UV-Vis spectroscopy for qualitative analysis?
Solution: UV-Vis spectroscopy identifies compounds by measuring the absorbance of light at specific wavelengths, which correlates with functional groups.
Steps: 5
Step 1: Understand that UV-Vis spectroscopy is a technique that uses ultraviolet and visible light to analyze substances.
Step 2: Know that different compounds absorb light at specific wavelengths based on their chemical structure.
Step 3: Recognize that the amount of light absorbed at these wavelengths is measured as absorbance.
Step 4: Learn that the absorbance values can indicate the presence of certain functional groups in the compound.
Step 5: Conclude that by comparing the absorbance data to known standards, we can identify the compounds present in a sample.
