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pH COMPARISON OF BUFFERED & UNBUFFERED SOLUTION (3 of 3)
pH After Adding 0.010 mol HCl
(left) Unbuffered solution =2.0 color turns yellow. (right) Buffered solution =4.7 color remains green. Buffer solutions resist change in hydrogen ion concentration. Indicator is bromocresol green.
Copyright:© 1992 Richard Megna - Fundamental Photographs
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