What instrument is used in chemistry labs to measure the molarity of a coloured solution by measuring the light transmitted through it?

Explanation

Option c, "Spectrophotometer," is correct because it is the instrument used in chemistry labs to measure the molarity of a colored solution by quantifying the amount of light transmitted through it. Spectrophotometers work on the principle that different substances absorb light at specific wavelengths, which allows for the determination of concentration based on the amount of light absorbed. One of the new technological additions to chemistry labs is the spectron 20 (a spectrophotometer) that uses the absorption of light waves to do qualitative and quantitative investigations in the lab.