Friday
October 24, 2014

Homework Help: Chemistry

Posted by Catherine on Thursday, April 25, 2013 at 5:59pm.

Calculate the concentration of bromocresol green (BG) indicator

It says that Molar absorptivity = Absorbance at a wavelength/ concentration of BG indicator

I am having trouble calculating the concentration of BG.

Other info: Stock solution of BG = 80.0 mg/L and molar mass = 698.0 g/mol
We added 10.00 ml of stock solution to a 50.0 ml volumetric flask and diluted it to the line with 0.4M HCl

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