1-For aqueous solutions of which of the following
substances could the concentration be determined by visible
spectrophotometry?
I Cr(NO3)3 II KMnO4
III Zn(NO3)2
(A) I only (B) III only (C) I and II only (D) I, II, III
explain the answer in details please.
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1-For aqueous solutions of which of the following substances could the concentration be determined by visible...
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