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4. What test will be performed to determine when sufficient NaOH has been added in Step II 5. How do you determine if you have added enough Zn metal in Step V? Write the balanced chemical equation for each of the following reactions: I. 6. Oxidizing Cu with concentrated nitric acid, HNO, (aq) II. Precipitating Cu(OH), with NaOH solution III. Converting blue solid Cu(OH), to black solid CuC IV. Dissolving CuO with sulfuric acid, H,SO, (aq) V. Reducing CuSO, with Zn metal A student performing this experiment started with a 0.384 g sample of Cu wire, which was dissolved in concentrated nitric acid. After completing the series of reactions, the student isolated 0.367 g of Cu. Calculate the percent Cu recovered by the student. 7.
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3) Angex4 fte additon of Hnthe soluhion becomes acidic and hence by pM tel. simple pk papes when shif ting eaniibri of sohuti

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