What can be analyzed from a flame emission line spectrum?

The correct answer highlights the ability to determine both the identity and concentration of metal ions present in a solution by analyzing a flame emission line spectrum. This technique involves introducing a sample into a flame, which excites the metal ions, causing them to emit light at characteristic wavelengths. Each metal ion emits a specific spectrum pattern, effectively acting as a fingerprint that allows for the identification of the metal present. The intensity of the emitted light correlates to the concentration of that metal ion in the solution; greater concentrations produce stronger signals in the spectrum.

Analyzing the flame emission spectrum provides precise insights into both which metals are present and how much of each metal exists in the sample, making it a valuable tool in various fields, including chemistry and environmental science.

In contrast, temperature assessments and measurements of acidity are not possible solely from flame emission spectra. Flame emission spectrometry is specifically designed for element identification, making it unsuitable for analyzing gas types or general solution qualities. This unique capability of flame emission spectra underscores its application and importance in qualitative and quantitative analysis of metal ions.