Which is used to mask cu by precipitation in the assay of lotions containing cu
and zn?
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2
Answer:
CH2OH
Explanation:
CH2OH is used to mask Cu by precipitation in the assay of lotions containing Cu and Zn. 4.
Answered by
0
Ascorbic acid can be used as a masking agent for copper in the assay of lotions containing copper and zinc.
- Masking agents are the agents that make the metals, that are not of interest, unavailable for reaction with the reagent by precipitating them as a complex. Hence, only the metal that must be estimated in the sample reacts with the actual reagent.
- Masking agents are used in complexometric titrations involving EDTA as a complexing agent.
- Both zinc and copper ions can react with EDTA. So to estimate only zinc, copper can be masked by agents like ascorbic acid. Ascorbic acid does not react with zinc ions and only masks copper ions.
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