题目内容

1. The analysis of pure NaOH (solid) can be used to prepare standard solution directly.

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Regarding the spectrophotometer, which of the following statements is incorrect?

A. The light source of the visible light spectrophotometer is a tungsten lamp
B. Use prism or grating as monochromator;
C. Must use quartz cuvette as absorption cell;
D. Use photomultiplier tube or photodiode as detector

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When applying Lambert-Beer law for quantitative analysis, what kind of light should be used as incident light?

A. White light
B. Sun rays
C. Monochromatic light
D. Ultraviolet light

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Among the following options, what is not related to the absorbance of the colored complex?

A. Wavelength of the incident light
B. Cuvette thickness
Complex concentration
D. Complex stability

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The absorbance of a solution is 0.6. If the solution concentration becomes half of the original solution, what is the transmittance of the diluted solution?

A. 10-0.6
B. 100.6
C. 10-0.3
D. 100.3

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