[Question of the Day] Chemical Engineering Analysis Edition, 2021.12.9
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For the determination of Cu2+ content in water using the indirect iodometry method, the pH value of the medium should be controlled at A: strongly acidic； B. Slightly acidic ； C, weakly alkaline ； D. Strongly alkaline B
B: According to relevant standards, and from memory, it seems that some acetic acid is added; thus it should be in a weakly acidic state. When dissolving copper, attention should be paid to the volume of the final solution, and residual acid should be removed as much as possible……