Na and k can be determined by the use of____________________?
Correct answer: C. Flame photometer
- A. Hydrometer
- B. Spectrophotometer
- C. Flame photometer
- D. All the above
Explanation
A flame photometer measures sodium and potassium by detecting the characteristic light emitted by their excited atoms. Hydrometers measure density, while spectrophotometers are not the standard instrument for this routine determination.
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