Molar Mass of Bromcresol Green, BCG, : 698 g/mole.

Molarity of Bromcresol Green, BCG, : ___________.

Part (1) Calculation of the extinction coefficients of BCG in acid and base solution:

Acid solution l_max for HIn : _____ nm (Wavelength with the greatest Absorbance)
 

A for HIn at lmax ________	for HIn at l max ________
A for HIn at l ' max _______	' for HIn at l ' max ______

Base solution l '_max for In- : _______ nm (Wavelength with the greatest Absorbance)
 

A for In- at l max _______	for In- at l max  _________
A for In- at l ' max ______	for In- at l ' max_________

Part (2) Calculation of and in a buffer solution
 

pH of the buffer ________	of the solution______
A at lmax ________	A' at l 'max _____________
= _________	= ________________

K_a = ___________

Calculations
 
 
 
 
 
 
 
 

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