Which of the following instruments is used to measure the concentration of a substance in a solution?
A. Chromatograph
B. Spectrophotometer
C. Refractometer
D. Colorimeter
Answer:B
Which of the following instruments is used to measure the concentration of a substance in a solution?
A. Chromatograph B. Spectrophotometer C. Refractometer D. Colorimeter
Explanation: A spectrophotometer is an instrument used to measure the amount of light absorbed or transmitted by a sample, which can be used to determine its concentration.