Why do we produce a "blank" solution (standard number 1) that does not contain any salicylic acid?

Question

Answer

To test if the spectrophotometer is working.

Answer

For practice.

Answer

It will flush out the spectrophotometer.

Answer

So its absorbance can be subtracted from the other solutions absorbance to give the net absorbance due only to the intensity of the coloured iron complex.

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Why do we produce a "blank" solution (standard number 1) that does not contain a...

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